each of them independently on the same lines as Wolff; the philosophy of the last-mentioned was popular and graceful in form. The Wolffian philosophy was thus carried on, although it had cast off its pedantic methods: no further progress was however made. The question dealt with was how perfection could be attained—what it is possible to think and what not; metaphysic was reduced to its slightest consistency and to its completest vacuity, so that in its texture not a single thread remained secure. Mendelssohn considered himself, and was considered, the greatest of philosophers, and was lauded as such by his friends. In his “Morgenstunden” we really find a dry Wolffian philosophy, however much these gentlemen endeavoured to give their dull abstractions a bright Platonic form.
The forms of Philosophy which we have considered bear the character which pertains specially to metaphysics, of proceeding from general determinations of the understanding, but of combining therewith experience and observation, or the empiric method in general. One side of this metaphysic is that the opposites of thought are brought into consciousness, and that attention is directed upon the solution of this contradiction. Thought and Being or extension, God and the world, good and evil, the power and prescience of God on the one side, and the evil in the world and human freedom on the other: these contradictions, the opposites of soul and spirit, things conceived and things material, and their mutual relation, have occupied all men’s attention. The solution of these opposites and contradictions has still to be given, and God is set forth as the One in whom all these contradictions are solved. This is what is common to all these philosophies as far as their main elements are concerned. Yet we must likewise remark that these contradictions are not solved in themselves, _i.e._ that the nullity of the supposition is not demonstrated in itself, and thereby a true concrete solution has not come to pass. Even if God is recognized as solving all contradictions, God as the solution of these contradictions is a matter of words rather than something conceived and comprehended. If God is comprehended in His qualities, and prescience, omnipresence, omniscience, power, wisdom, goodness justice, &c., are considered as qualities of God Himself, they simply lead to contradictions; and these contradictions, Leibnitz (_supra_, p. 348) sought to remove by saying that the qualities temper one another, _i.e._ that they are combined in such a way that one annuls the other. This, however, is no real comprehension of such contradiction.
This metaphysic contrasts greatly with the old philosophy of a Plato or an Aristotle. To the old philosophy we can always turn again and admit its truth; it is satisfying in the stage of development it has reached—a concrete centre-point which meets all the problems set by thought as these are comprehended. In this modern metaphysic, however, the opposites are merely developed into absolute contradictions. God is indeed given as their absolute solution, but only as an abstract solution, as a Beyond; on this side all contradictions are, as regards their content, unsolved and unexplained. God is not comprehended as the One in whom these contradictions are eternally resolved; He is not comprehended as Spirit, as the Trinity. It is in Him alone as Spirit, and as Spirit which is Three in One, that this opposition of Himself and His Other, the Son, is contained, and with it the resolution of the same; this concrete Idea of God as reason, has not as yet found an entrance into Philosophy.
In order that we may now cast a retrospective glance over the philosophic efforts of other nations, we shall apply ourselves to the further progress of Philosophy. Once more we see Scepticism making its way into this arid philosophy of the understanding. But this time it is, properly speaking, in the form of Idealism, or the determinations are subjective determinations of self-consciousness. In the place of thought we consequently find the Notion now making its appearance. Just as with the Stoics determinateness is held to be an object of thought, we have in modern times this same manifestation of thought as the unmoved form of simplicity. Only here the image or inner consciousness of totality is present, the absolute spirit which the world has before it as its truth and to whose Notion it makes its way—this is another inward principle, another implicitude of mind which it endeavours to bring forth from itself and for itself, so that reason is a comprehension of the same, or has the certitude of being all reality. With the ancients reason (λόγος), as the implicit and explicit Being of consciousness, had only an ethereal and formal existence as language, but here it has certainty as existent substance. Hence with Descartes there is the unity of the Notion and Being, and with Spinoza the universal reality. The first commencement of the Notion of the movement of fixed thoughts in themselves is found in this, that the movement which, as method, simply falls outside its object, comes within it, or that self-consciousness comes within thought. Thought is implicitude without explicitude, an objective mode bearing no resemblance to a sensuous thing; and yet it is quite different from the actuality of self-consciousness. This Notion which we now find entering into thought, has the three kinds of form which we still have to consider; in the first place it has that of individual self-consciousness or the formal conception generally; secondly, that of universal self-consciousness, which applies itself to all objects whether they be objects of thought, determinate conceptions, or have the form of actuality—that is to say it applies itself to what is established in thought, to the intellectual world with the riches of its determinations and looked on as a Beyond, or to the intellectual world in as far as it is its realization, the world here and around us. It is in those two ways, and in those ways alone, that the actual Notion is present in the succeeding chapter; for not as yet is it in the third place to be found as taken back into thought, or as the self-thinking or thought-of Notion.
While that universal self-consciousness is, on the whole, a thought which grasps and comprehends, this third kind of thought is the Notion itself recognized as constituting reality in its essence, that is to say as Idealism. These three aspects again divide themselves as before into the three nations which alone count in the civilized world. The empirical and perfectly finite form of Notion pertains to the English; to the French belongs its form as making an attempt at everything, as establishing itself in its reality, abolishing all determination, and therefore being universal, unlimited, pure self-consciousness; and, lastly, to the German pertains the entering into itself of this implicitude, the thought of the absolute Notion.
CHAPTER II TRANSITION PERIOD The decadence which we find in thought until the philosophy of Kant is reached, is manifested in what was at this time advocated in opposition to the metaphysic of the understanding, and which may be called a general popular philosophy, a reflecting empiricism, which to a greater or less extent becomes itself a metaphysic; just as, on the other hand, that metaphysic, in as far as it extended to particular sciences, becomes empiricism. As against these metaphysical contradictions, as against the artificialities of the metaphysical synthesis, as against the assistance of God, the pre-established harmony, the best possible world, &c., as against this merely artificial understanding, we now find that fixed principles, immanent in mind, have been asserted or maintained respecting what is felt, intuitively perceived and honoured in the cultured human breast. And in distinction to the assertion that we only find the solution in the Beyond, in God, these concrete principles of a fixed and permanent content form a reconciliation here and now, they adopt a position of independence, and assume an intellectual standing-ground which they find in what has generally been termed the healthy human understanding. Such determinations may indeed be found to be perfectly good and valid if the feelings, intuitions, heart and understanding of man be morally and intellectually fashioned; for in that case better and more noble feelings and desires may rule in men and a more universal content may be expressed in these principles. But when men make what we call sound reason—that which is by nature implanted in man’s breast—into the content and the principle, the healthy human understanding discovers itself to be identical with a feeling and knowledge belonging to nature.
The Indians who worship a cow, and who expose or slay new-born children, and commit all sorts of barbarous deeds, the Egyptians who pray to a bird, the apis, &c., and the Turks as well, all possess a healthy human understanding similar in nature. But the healthy human understanding and the natural feeling of rude and barbarous Turks, when taken as a standard, result in shocking principles. When we speak of healthy human understanding, however, of natural feelings, we always have before our eyes a cultured mind; and those who make the healthy human reason, the natural knowledge, the immediate feelings and inspirations found in themselves, into a rule and standard, do not know that when religion, morality, and rectitude are discovered to be present in the human breast, this is due to culture and education, which are the first to make such principles into natural feelings. Here natural feelings and the healthy human understanding are thus made the principle; and much may be recognized as coming under these heads. This then is the form taken by Philosophy in the eighteenth century. Taken as a whole, three points of view have to be considered; in the first place, Hume must be regarded on his own account, then the Scottish, and, thirdly, the French philosophy.
Hume is a sceptic; the Scottish philosophy opposes the scepticism of Hume, the French philosophy has in the “enlightenment” of Germany (by which expression is indicated that form of German philosophy which is not Wolffian metaphysics) an appendage of a feebler form. Since from the metaphysical God we can make no further progress in the concrete, Locke grounds his content on experience. But that empiricism leads thought to no fixed standpoint, Hume demonstrates by denying every universal; the Scottish philosophers, on the contrary, undoubtedly maintain universal propositions and truths, but not through thought. Hence in empiricism itself the fixed standpoint has now to be adopted; thus the French find the universal in the actuality which they call _réalité_. They do not, however, find its content in and from thought, but as living substance, as nature and matter. All this is a further working out of reflecting empiricism, and some more details respecting it must still be given.
A. IDEALISM AND SCEPTICISM.
Thought generally is simple, universal self-identity, but in the form of negative movement, whereby the determinate abrogates itself. This movement of Being-for-self is now an essential moment of thought, while hitherto it was outside it; and thus grasping itself as movement in itself, thought is self-consciousness—at first indeed formal, as individual self-consciousness. Such a form it has in scepticism, but this distinction marks it off from the older scepticism, that now the certainty of reality is made the starting point. With the ancients, on the contrary, scepticism is the return into individual consciousness in such a way that to it this consciousness is not the truth, in other words that scepticism does not give expression to the results arrived at, and attains no positive significance. But since in the modern world this absolute substantiality, this unity of implicitude and self-consciousness is fundamental—that is, this faith in reality generally—scepticism has here the form of idealism, _i.e._ of expressing self-consciousness or certainty of self as all reality and truth. The crudest form of this idealism is when self-consciousness, as individual or formal, does not proceed further than to say: All objects are our conceptions. We find this subjective idealism in Berkeley,[279] and another form of the same in Hume.
1. BERKELEY.
This idealism, in which all external reality disappears, has before it the standpoint of Locke, and it proceeds directly from him. For we saw that to Locke the source of truth is experience, or Being as perceived.
Now since this sensuous Being, as Being, has in it the quality of being for consciousness, we saw that it necessarily came to pass that in Locke’s case some qualities, at least, were so determined that they were not in themselves, but only for another; and that colour, figure, &c., had their ground only in the subject, in his particular organization.
This Being-for-another, however, was not by him accepted as the Notion, but as falling within self-consciousness—i.e. self-consciousness not looked on as universal,—not within mind, but within what is opposed to the implicit.
George Berkeley was born in 1684 at Kilcrin, near Thomastown, in the county of Kilkenny, Ireland: in 1754 he died as an English Bishop.[280] He wrote the “Theory of Vision,” 1709; “A Treatise concerning the principles of human knowledge,” 1710; “Three Dialogues between Hylas and Philonous,” 1713. In 1784 his collected works were published in London in two quarto volumes.
Berkeley advocated an idealism which came very near to that of Malebranche. As against the metaphysic of the understanding, we have the point of view that all existence and its determinations arise from feeling, and are constituted by self-consciousness. Berkeley’s first and fundamental thought is consequently this: “The Being of whatever is called by us a thing consists alone in its being perceived,” _i.e._ our determinations are the objects of our knowledge. “All objects of human knowledge are ideas” (so called by Berkeley as by Locke), “which arise either from the impressions of the outward senses, or from perceptions of the inward states and activities of the mind, or finally, they are such as are constituted by means of memory and imagination through their separation and rearrangement. A union of different sensuous feelings appears to us to be a particular thing, _e.g._ the feeling of colour, taste, smell, figure, &c.; for by colours, smells, sounds, something of which we have a sensation is always understood.”[281] This is the matter and the object of knowledge; the knower is the percipient “I,” which reveals itself in relation to those feelings in various activities, such as imagination, remembrance, and will.
Berkeley thus indeed acknowledges the distinction between Being-for-self and Other-Being, which in his case, however, itself falls within the “I.” Of the matter on which activity is directed, it is no doubt in regard to one portion allowed that it does not exist outside of mind—that is to say, so far as our thoughts, inward feelings and states, or the operations of our imaginary powers are concerned. But in like manner the manifold sensuous conceptions and feelings can only exist in a mind.
Locke certainly distinguished extension and movement, for example, as fundamental qualities, _i.e._ as qualities which pertain to the objects in themselves. But Berkeley very pertinently points out inconsistency here from the point of view that great and small, quick and slow, hold good as something relative; thus were extension and movement to be inherent or implicit, they could not be either large or small, quick or slow; that is, they could not be, for these determinations rest in the conception[282] of such qualities. In Berkeley the relation of things to consciousness is alone dealt with, and beyond this relationship they do not in his view come. From this it follows that it is only self-consciousness that possesses them; for a perception which is not in a conceiving mind is nothing: it is a direct contradiction. There can be no substance, he says, which neither conceives nor perceives, and which is yet the substratum of perceptions and conceptions. If it is represented that there is something outside of consciousness which is similar to the conceptions, this is likewise contradictory; a conception can alone be similar to a conception, the idea to the idea alone.[283] Thus, while Locke’s ultimate point is abstract substance, Being generally with the real determination of a substratum of accidents, Berkeley declares this substance to be the most incomprehensible assumption of all; but the incomprehensibility does not make this Being into an absolute nullity, nor does it make it in itself incomprehensible.[284] For Berkeley brings forward against the present existence of external objects only the inconceivability of the relation of a Being to mind.
This inconceivability, however, is destroyed in the Notion, for the Notion is the negative of things; and this moved Berkeley and Leibnitz to shut up the two sides in themselves. There nevertheless remains a relationship of what is “other” to us; these feelings do not develop from us as Leibnitz represents, but are determined through somewhat else.
When Leibnitz speaks of development within the monads, it is nothing but empty talk; for the monads as they follow in succession have no inward connection. Each individual is thus determined through another, and not through us; and it does not matter what this external is, since it remains a contingent. Now in relation to the two sides of Leibnitz which are indifferent to one another, Berkeley says that such an “other” is quite superfluous. Berkeley calls the other the objects; but these, he says, cannot be what we call matter, for spirit and matter cannot come together.[285] But the necessity of conceptions directly contradicts this Being-within-self of the conceiver; for the Being-within-self is the freedom of the conceiver; the latter does not, however, produce the conceptions with freedom; they have for him the form and determinateness of an independent “other.” Berkeley likewise does not accept idealism in the subjective sense, but only in respect that there are spirits which impart themselves (in the other case the subject forms his own conceptions), and consequently that it is God alone who brings to pass such conceptions; thus the imaginations or conceptions which are others,[286] _i.e._ from the implicit.
This conception gives an instance of the difficulties which appear in regard to these questions, and which Berkeley wished to escape from in a quite original way. The inconsistency in this system God has again to make good; He has to bear it all away; to Him the solution of the contradiction is left. In this idealism, in short, the common sensuous view of the universe and the separation of actuality, as also the system of thought, of judgments devoid of Notion, remain exactly as before; plainly nothing in the content is altered but the abstract form that all things are perceptions only.[287] Such idealism deals with the opposition between consciousness and its object merely, and leaves the extension of the conceptions and the antagonisms of the empirical and manifold content quite untouched; and if we ask what then is the truth of these perceptions and conceptions, as we asked formerly of things, no answer is forthcoming. It is pretty much a matter of indifference whether we believe in things or in perceptions, if self-consciousness remains possessed entirely by finalities; it receives the content in the ordinary way, and that content is of the ordinary kind. In its individuality it stumbles about amid the conceptions of an entirely empirical existence, without knowing and understanding anything else about the content: that is to say in this formal idealism reason has no content of its own.
As to what Berkeley further states in respect of the empirical content, where the object of his investigation becomes entirely psychological, it relates in the main to finding out the difference between the sensations of sight and feeling, and to discovering which kind of sensations belong to the one and which to the other. This kind of investigation keeps entirely to the phenomenal, and only therein distinguishes the various sorts of phenomena; or comprehension only reaches as far as to distinctions. The only point of interest is that these investigations have in their course chiefly lighted on space, and a dispute is carried on as to whether we obtain the conception of distance and so on, in short all the conceptions relating to space, through sight or feeling. Space is just this sensuous universal, the universal in individuality itself, which in the empirical consideration of empirical multiplicity invites and leads us on to thought (for it itself is thought), and by it this very sensuous perception and reasoning respecting perception is in its action confused. And since here perception finds an objective thought, it really would be led on to thought or to the possession of a thought, but at the same time it cannot arrive at thought in its completion, since thought or the Notion are not in question, and it clearly cannot come to the consciousness of true reality. Nothing is thought in the form of thought, but only as an external, as something foreign to thought.
2. HUME.
We must add to what has preceded an account of the Scepticism of Hume, which has been given a more important place in history than it deserves from its intrinsic nature; its historic importance is due to the fact that Kant really derives the starting point of his philosophy from Hume.
David Hume was born in 1711 at Edinburgh and died there in 1776. He held a librarian’s post in that town for some time, then he became secretary to the Embassy in Paris; for quite a long period, indeed, he moved in diplomatic circles. In Paris he came to know Jean Jacques Rousseau and invited him to England, but Rousseau’s terribly distrustful and suspicious nature very soon estranged the two.[288] Hume is more celebrated as a writer of history than through his philosophic works.
He wrote: “A Treatise of human nature,” 3 vols., 1739, translated into German by Jacob, Halle, 1790, 8vo; likewise “Essays and Treatises on several subjects,” 2 vols. (Vol. I. containing “Essays moral, political and literary,” printed for the first time in Edinburgh, 1742; Vol.
II. containing an “Inquiry concerning human understanding,” a further development of the Treatise, and first printed separately in London, 1748, 8vo). In his “Essays,” which contributed most to his fame as far as the philosophic side is concerned, he treated philosophic subjects as an educated, thoughtful man of the world would do—not in a systematic connection, nor showing the wide range which his thoughts should properly have been able to attain; in fact in some of his treatises he merely dealt with particular points of view.
We must shortly deal with the main aspects of Hume’s philosophy. He starts directly from the philosophic standpoint of Locke and Bacon, which derives our conceptions from experience, and his scepticism has the idealism of Berkeley as its object. The sequence of thought is this: Berkeley allows all ideas to hold good as they are; in Hume the antithesis of the sensuous and universal has cleared and more sharply defined itself, sense being pronounced by him to be devoid of universality. Berkeley does not make any distinction as to whether in his sensations there is a necessary connection or not. Formerly experience was a mixture of the two elements. Hume tells us that all perceptions of the mind may be divided into two classes or species, that of impressions, _i.e._ sensuous perceptions, and thoughts or ideas; the latter are similar in content to the former, but less forcible and lively. All objects of reason are consequently either relations of thoughts such as mathematical axioms, or facts of experience.[289] Since Hume makes these into the content he naturally rejects innate ideas.[290] Now when Hume goes on to consider more closely what is subsumed under experience, he finds categories of the understanding present there, and more especially the determination of the universal and of universal necessity; he took under his consideration more particularly the category of cause and effect, and in it set forth the rational element, inasmuch as in this causal relationship necessity is especially contained. Here Hume really completed the system of Locke, since he consistently drew attention to the fact that if this point of view be adhered to, experience is indeed the principle of whatever one knows, or perception itself contains everything that happens, but nevertheless the determination of universality and necessity are not contained in, nor were they given us by experience. Hume has thus destroyed the objectivity or absolute nature of thought-determinations. “Our conviction of the truth of a fact rests on feeling, memory, and the reasonings founded on the causal connection, _i.e._ on the relation of cause and effect. The knowledge of this relation is not attained by reasonings _a priori_, but arises entirely from experience; and we draw inferences, since we expect similar results to follow from similar causes, by reason of the principle of the custom or habit of conjoining different manifestations, _i.e._ by reason of the principle of the association of ideas. Hence there is no knowledge and no metaphysics beyond experience.”[291] The simple thought we have here is exactly what Locke says, that we must receive the conception of cause and effect, and thus of a necessary connection, from experience; but experience, as sensuous perception, contains no necessity, has no causal connection. For in what we term such, that which we properly speaking perceive is merely the fact that something first of all happens and that then something else follows.
Immediate perception relates only to a content of conditions or things which are present alongside of and in succession to one another, but not to what we call cause and effect; in time-succession there is thus no relation of cause and effect, and consequently no necessity either.[292] When we say the pressure of the water is the cause of the destruction of this house, that is no pure experience. We have merely seen the water pressing or moving along in this direction, and subsequently the house falling down; and so with other examples. Necessity is thus not justified by experience, but we carry it into experience; it is accidentally arrived at by us and is subjective merely. This kind of universality which we connect with necessity, Hume calls custom. Because we have often seen results to follow we are accustomed to regard the connection as a necessary one; the necessity to him is thus a quite contingent association of ideas, which is custom.
It is the same thing in respect of the universal. What we perceive are individual phenomena and sensations in which we see that this is now one thing and now another. It may likewise be that we perceive the same determination frequently repeated and in manifold ways. But this is still far removed from universality; universality is a determination which is not given to us through experience. It may be said that this is quite a correct remark on Hume’s part, if by experience we understand outward experience. Experience is sensible that something exists, but nevertheless the universal is not as yet present in it. Indeed, sensuous existence as such is something which is set forth as indifferent, not differentiated from anything else; but sensuous existence is likewise universal in itself, or the indifference of its determinateness is not its only determinateness. But since Hume regards necessity, the unity of opposites, as resting quite subjectively on custom, we cannot get any deeper in thought. Custom is indeed so far a necessity in consciousness, and to this extent we really see the principle of this idealism in it; but in the second place this necessity is represented as something quite devoid of thought or Notion.
This custom obtains both in our perception which relates to sensuous nature, and in relation to law and morality. The ideas of justice and morality rest upon an instinct, on a subjective, but very often deceptive moral feeling.[293] From a sceptical point of view the opposite may likewise be demonstrated. From this side Hume considers justice, morality, religious determinations, and disputes their absolute validity.
That is to say when it is assumed that our knowledge arises from experience, and that we must consider only what we obtain thereby to be the truth, we find indeed in our feeling, the sentiment _e.g._ that the murderer, the thief, &c., must be punished; and because this is likewise felt by others it is universally allowed. But Hume, like the sceptics of former days, appeals to the various opinions of various nations: amongst different nations and in different times various standards of right have been held.[294] There are those who in this case do not have the feeling of wrong-doing in respect of stealing, _e.g._ the Lacedæmonians or the so-called innocent inhabitants of the South Sea Islands. What is by one nation called immoral, shameful and irreligious, is by another not considered so at all. Thus because such matters rest upon experience, one subject has such and such an experience, finds, for instance, in his religious feelings this determination which inclines him to God, while another subject has different experiences altogether. We are in the habit of allowing one thing to be just and moral, others have another mode of regarding it. Hence if the truth depends upon experience, the element of universality, of objectivity, &c., comes from elsewhere, or is not justified by experience. Hume thus declared this sort of universality, as he declared necessity, to be rather subjectively than objectively existent; for custom is just a subjective universality of this kind. This is an important and acute observation in relation to experience looked at as the source of knowledge; and it is from this point that the Kantian reflection now begins.
Hume (Essays and Treatises on several subjects, Vol. III. Sect. 8, 11) then extended his scepticism to the conceptions and doctrines of freedom and necessity, and to the proofs of the existence of God; and in fact scepticism here possesses a wide field. To such a system of reasoning from thoughts and possibilities another method of reasoning may again be opposed, and this reasoning is no better than the other. What is said to be metaphysically established regarding immortality, God, nature, &c., lacks a real ground for resting upon, such as is professed to be given; for the inferences on which men ground their proofs are subjectively formed conceptions. But where a universality is found, it does not rest in the matter in itself, but is simply a subjective necessity which is really mere custom. Hence the result which Hume arrives at is necessarily astonishment regarding the condition of human knowledge, a general state of mistrust, and a sceptical indecision—which indeed does not amount to much. The condition of human knowledge regarding which Hume so much wonders, he further describes as containing an antagonism between reason and instinct; this instinct, it is said, which embraces many sorts of powers, inclinations, &c., deceives us in many different ways, and reason demonstrates this. But on the other side it is empty, without content or principles of its own; and if a content is in question at all, it must keep to those inclinations. In itself reason thus has no criterion whereby the antagonism between individual desires, and between itself and the desires, may be settled.[295] Thus everything appears in the form of an irrational existence devoid of thought; the implicitly true and right is not in thought, but in the form of an instinct, a desire.
B. SCOTTISH PHILOSOPHY.
In Scotland quite another school of thought developed, and the Scotch are the foremost of Hume’s opponents; in German philosophy, on the other hand, we have to recognize in Kant another opposing force to that of Hume. To the Scottish school many philosophers belong; English philosophy is now restricted to Edinburgh and Glasgow, in which places a number of professors belonging to this school succeeded one another. To the scepticism of Hume they oppose an inward independent source of truth for all that pertains to religion and morality. This coincides with Kant, who also maintains an inward source or spring as against external perception; but in the case of Kant this has quite another form than that which it possesses with the Scottish philosophers. To them this inward independent source is not thought or reason as such, for the content which comes to pass from this inwardness is concrete in its nature, and likewise demands for itself the external matter of experience. It consists of popular principles, which on the one hand are opposed to the externality of the sources of knowledge, and, on the other, to metaphysics as such, to abstract thought or reasoning on its own account. This sort of reasoning understanding applied itself to ethics and to politics—sciences which have been much developed by German, French, and above all by Scottish philosophers (_supra_, p. 320): they regarded morality as cultured men would, and sought to bring moral duties under a principle. Many of their works are translated into German; several of these on ethics or morality are translated by Garve, for instance, who also translated Cicero _De Officiis_, and they are written in a manner similar to that of Cicero when he uses the expression _Insitum est a natura_ (Vol. I. p. 93). This moral sentiment and the ordinary human understanding hereafter formed the common principle to a whole succession of Scots, such as Thomas Reid, Beattie, Oswald, and others; in this way they frequently made sagacious observations, but with them speculative philosophy quite disappears. One special characteristic of these Scottish philosophers is that they have sought accurately to define the principle of knowledge; but on the whole they start from the same point as that which was in Germany likewise accepted as the principle. That is to say they represented the so-called healthy reason, or common-sense (_sensus communis_), as the ground of truth. The following are the principal members of this school, each of whom has some special feature distinguishing him from the rest.
1. THOMAS REID.
Thomas Reid, born in 1710, died as a professor in Glasgow in 1796.[296] He maintained the principle of common-sense. His endeavour was to