II., so well known in his earlier days as Gerbert, escaped as a monk to Spain for the purpose of studying with the Arabs.[32] The sciences of medicine and alchemy were diligently pursued. Christian doctors there studied medicine under the Jewish-Arabian teachers. It was principally the Aristotelian metaphysics and physics which were then known, and from these abstracts (_summæ_) were constructed. The logic and metaphysics of Aristotle were spun out with extreme fineness into endless distinctions, and brought into genuine syllogistic forms of the understanding, which constituted for the most part the principle for the treatment of the subject dealt with. In this way dialectic subtlety was much increased, while the properly speculative side in Aristotle remained for the spirit of externality, and consequently also of irrationality, in the background.
The Hohenstaufen emperor Frederick II. then sent for Aristotelian books from Constantinople and had them translated into Latin. At first, indeed, on the first appearance of the Aristotelian writings, the Church made difficulties; the reading of his metaphysics and physics and the abstracts prepared therefrom, as also the exposition of the same, was forbidden by a church synod held at Paris 1209. Likewise in 1215 the cardinal Robert Corceo came to Paris and there held a visitation of the university, on which occasion he ordained that regular lectures on the dialectical writings of Aristotle should be held while he forbade the reading of and lecturing on the metaphysics and natural philosophy of Aristotle, and the abstracts prepared from them; he also condemned the doctrines of the heretics David of Dinant and Amalrich and likewise the Spaniard Mauritius. Pope Gregory, in a bull issued to the University of Paris in 1231, without mentioning metaphysics, forbade the books of the Physics to be read until they had been examined and purified from all suspicion of error. But later on, in 1366, it was on the other hand ordained by two cardinals that no one could be made a _magister_ unless he had studied the prescribed books of Aristotle—amongst which were the Metaphysics and some of the Physics—and had proved himself capable of explaining them.[33] It was only much later on, however, when Greek literature in general had again become widely diffused, that men became better acquainted with the Greek text of the Aristotelian writings.
b. ALBERTUS MAGNUS.
Amongst those who distinguished themselves through their commentaries on Aristotle’s writings, we must specially mention Albertus Magnus, the most celebrated German schoolman, of the noble race of Bollstadt. Magnus either was his family name, or it was given him on account of his fame.
He was born in 1193 or 1205 at Lauingen on the Danube in Swabia, and began by studying at Padua, where his study is still shown to travellers.
In the year 1221 he became a Dominican friar, and afterwards lived at Cologne as Provincial of his Order in Germany: in 1280 he died. It is said of him that in his youth he showed himself very dull and stupid, until, according to a legend, the Virgin Mary appeared to him in company with three other beautiful women, incited him to the study of Philosophy, liberated him from his dulness of understanding, and promised him that he should enlighten the Church, and, in spite of his science, should still die in the faith. What happened was in accordance with this prophecy, for five years before his death he forgot all his philosophy as quickly as he learned it, and then actually died in the dulness and orthodoxy of his earlier years. Hence there is current regarding him an old saying: “Albert changed quickly from an ass into a philosopher, and from a philosopher into an ass.” His learning was generally understood to consist largely of magic. For although natural objects have nothing to do with scholasticism proper, which was really perfectly blind to nature, he occupied himself much therewith; and amongst other devices he manufactured a talking machine which alarmed his pupil Thomas of Aquino, who even aimed a blow at it, thinking he saw therein a work of the devil. Likewise the fact that he received and entertained William of Holland[34] in the middle of winter in a garden full of blossom, is counted as magic.[35] While as for us—we find the winter-garden in Faust quite natural.
Albert wrote a great deal, and twenty-one folios remain to us of his writings. He wrote on Dionysius the Areopagite, commentated the _Magister sententiarum_, was specially conversant with the Arabians and the Rabbis, as he was also well acquainted with the works of Aristotle, although he himself understood neither Greek nor Arabic. He likewise wrote on the Physics of Aristotle. There is found in him a remarkable instance of deficient knowledge of the history of Philosophy. He derived the name Epicurean (Opera, T.V. pp. 530, 531) from the fact that they idled away their time [auf der faulen Haut lagen] (ἐπὶ _cutem_) or else from _cura_ because they concerned themselves with many useless things (_supercurantes_). He represents the Stoics as being something like our choir-boys; he says that they were people who made songs (_facientes cantilenas_), and roamed about in porticoes. For, as he here remarks in a very learned way, the first philosophers clothed their philosophy in verses, and then sang them in halls and porches, and hence they are called standers in the porch (_Stoici_). Gassendi relates (_Vita Epicuri_, I. c. 11, p. 51) that Albertus Magnus mentioned as the first Epicureans, Hesiodus, Athalius or Achalius (of whom we know nothing), Cæcina, or, as others call him, Tetinnus, a friend of Cicero, and Isaacus, the Jewish philosopher. How that is arrived at we do not know at all. Of the Stoics Albertus, on the contrary, mentions Speusippus, Plato, Socrates and Pythagoras. These anecdotes give us a picture of the condition of culture in these times.
4. OPPOSITION BETWEEN REALISM AND NOMINALISM.
In the fourth place we must mention an important matter, to which much attention was devoted in the Middle Ages, namely that particular philosophic question which formed the subject of controversy between the Realists and the Nominalists, and the discussion of which was continued through very nearly the whole of the Scholastic period. Speaking generally, this controversy is concerned with the metaphysical opposition between the universal and the individual; it occupies the attention of Scholastic philosophy for several centuries, and reflects great credit upon it. A distinction is drawn between the earlier and later Nominalists and Realists, but otherwise their history is very obscure; and we know more of the theological aspect of the subject than of this.
a. ROSCELINUS.
The beginning of the controversy dates back to the eleventh century, Roscelinus being the earliest Nominalist. The famous Abelard, although he professes to be an opponent of Roscelinus, is himself nothing more or less than a Nominalist. Roscelinus wrote also against the doctrine of the Trinity, and was pronounced guilty of heresy in 1092 at an ecclesiastical council which met at Soissons. His influence was, however, but small.[36] The matter in question is the universal as such (_universale_), or the genus, the essence of things, what in Plato was called the Idea—for instance, Being, humanity, the animal. The followers of Plato asserted that these universals exist; their existence was individualized, and thus ‘tableness’ was said to be also a real existence (_supra_, Vol. II.
p. 29). We make representations of a thing to ourselves, and say “it is blue;” this is a universal. The question now is whether such universals are something real in and for themselves, apart from the thinking subject, and independent of the individual existing thing, so that they exist in the individual things independently of the individuality of the thing and of each other; or whether the universal is only nominal, only in the subjective representation, a thing of thought. Those who maintained that the universals had a real existence apart from the thinking subject and distinct from the individual thing, and that the Idea alone constitutes the essence of things, were termed Realists—a use of the term in quite an opposite sense to that which passes current now. I mean that this expression has for us the signification that things as they are in their immediacy have an actual existence; and to this idealism is opposed, that being a name which was given later to the philosophy which ascribes reality to ideas alone, and asserts that things as they appear in their individuality have no truth. The realism of the Scholastics in the same way maintained that the Universal has an independent, absolute existence, for Ideas are not liable to destruction, like natural things, therefore they are immutable and the only true existence. In opposition to this, the others, the Nominalists or Formalists, asserted that if generals or universals are formed, these are only names, matters of form, representations which we make to ourselves, a subjective generalization, a product of the thinking mind; the individual alone is the real.
This is then the matter in question; it is of great interest, and is founded upon a much higher opposition than any the ancients knew of.
Roscelinus made universal conceptions arise only from the necessities of language. He maintained that ideas or universals, like Being, life, reason, are in themselves nothing but mere abstract notions or generic names, which, as such, have in and for themselves no universal reality of their own: that which has Being and life is found in the individual alone. Against these assertions arguments are brought forward by which one can see that the manner in which the Christian world was taken as basis, often became in the highest degree ridiculous. For instance, Abelard reproaches Roscelinus for having asserted that no thing has parts, that only the words which denote the things are divisible.
Abelard proved that according to Roscelinus, Christ did not eat a real part of the broiled fish, but only a part—I do not know which—of the word “broiled fish,” since according to him there were no parts—which interpretation would be preposterous and highly blasphemous.[37] Our way of reasoning from “healthy human understanding,” is not much better.
b. WALTER OF MORTAGNE.
Walter of Mortagne (d. 1174) aimed at the union of the particular and the universal, saying that the universal must be individual, that universals must be united with individuals in accordance with their essence.[38] In later times the two rival factions were known to fame as Thomists, from the Dominican Thomas Aquinas, and Scotists, from the Franciscan Johannes Duns Scotus. Nevertheless, the original question as to whether universal notions have reality, and, if so, to what extent they have it, underwent a great variety of modifications and gradations, just as the opposing parties received very various names. Nominalism, in its crude form, declared universal notions to be mere names, which have reality only in speech, and it ascribed reality to individuals alone; Realism followed the exactly opposite course of attributing reality only to universals, while it considered that what distinguished individual things was an accident only or a pure difference. Neither of these two theories was correct in the manner of passing from the universal to the particular. There were some, however, among the Schoolmen who grasped the true conception that individuation, the limitation of the universal, and indeed of what is most universal, Being and entity, is a negation.
Others said that the limit is itself something positive, but that it is not one with the universal by union with it, for it rather stands in a metaphysical connection with it, that is, in a connection such as that which binds thought with thought. This implies that the individual is only a clearer expression of what is already contained in the general conception; so that these conceptions, in spite of their being divided into parts and differentiated, still remain simple; Being or entity, moreover, really is a Notion.[39] Thomas, who was a Realist, declared the universal Idea to be indeterminate, and placed individuation in determinate matter (_materia signata_), _i.e._ matter in its dimensions or determinations. According to him, the original principle is the universal Idea; the form, as _actus purus_, may, as with Aristotle, exist on its own account; the identity of matter and form, the forms of matter, as such, are further removed from the original principle,—while thinking substances are mere forms.[40] But for Scotus the universal is rather the individual One, the one he thinks may appear also in the other; he maintained therefore the principle of individuation, and the formal character of the universal. In his view indeterminate matter becomes individual through an inward positive addition; the substantial forms of things are their real essence. Occam thus represents the views of Scotus: “In the thing that exists outside of the soul the same Nature exists _realiter_ with the difference limiting (_contrahente_) it to a determinate individual, being only formally distinguished, and in itself neither universal nor individual, but incompletely universal in the thing, and completely universal in the understanding.”[41] Scotus racked his brains much over this subject. To universals the Formalists allowed only an ideal reality in the divine and human intellect beholding them.[42] We thus see how closely connected with this is the thought which we first meet with in the Scholastics, namely the seeking and giving of so-called proofs of God’s existence c. WILLIAM OCCAM.
The opposition between Idealists and Realists appeared at an early stage, it is true, but it was not until later, after the time of Abelard, that it became the order of the day, and was invested with general interest.
This was brought about chiefly by the Franciscan William Occam, of the village of Occam in the county of Surrey in England, who was surnamed _Doctor invincibilis_, and flourished in the beginning of the fourteenth century: the year of his birth is unknown. He is greatly celebrated for his skill in handling the weapons of logic; he is keen in discrimination and fertile in devising arguments and counter-arguments. Occam was a leading champion of Nominalism, which up to this time had found only here and there a defender, like Roscelinus and Abelard; his numerous followers received the name of Occamists and were Franciscans, while the Dominicans retained the name of Thomists. The conflict between Nominalists and Realists raged with a burning vehemence, and was carried to the greatest extremes; a pulpit is still shown which was separated by a wooden partition from the platform of the opponent, in order that the disputants might not come to blows. Henceforth theology was taught under two forms (_theologia scholastica secundum utramque partem_). Owing to the civil wars in France, politics also began gradually to affect the relationship between the orders, and this lent increased importance to the conflict into which jealousy had plunged the rival factions. In 1322, at a convention of his order, and also on other occasions, Occam and his order defended to the utmost of their power the claims of the different princes, such as the King of France and the Emperor of Germany, Louis of Bavaria, against the pretensions of the Pope. Among the words of William to the Emperor were these, “Do thou defend me with the sword, and I will defend thee with the pen.” Interdicts of the Paris University and Papal bulls were issued against Occam. The Paris University forbade his doctrines to be taught or his works quoted. A special prohibition was issued in 1340: “No teacher shall venture to assert plainly, or in so many words, that some familiar maxim of the author on whom he is lecturing is false, but shall either assent to it, or distinguish the true and the false significance; otherwise the dangerous result is to be apprehended that the truths of the Bible might be in like manner rejected. No teacher shall assert that a maxim cannot be thus explained or further defined.” Occam was excommunicated in 1328, and died at Munich in 1343.[43] Occam asks in one of his writings (_in libr. I. Sentent. Dist. II.
Quæst. 4_), “Whether what is immediately and proximately denoted by the universal and by the generic name is a real thing outside of the soul, something intrinsic and essential in the things to which it is common and which are called by its name, and yet in reality distinguished from them.” This definition of the Realists is given more in detail by Occam as follows: “As to this question, one opinion is that each generic designation or universal is a thing really existing outside of the soul in each and every individual, and that the Being (_essentia_) of each individual is really distinguished from each individual” (_i.e._ from its individuality), “and from each universal. Thus man, the universal, is a true thing outside of the soul, which exists in reality in each human being, but is distinguished from each human being, from Universal living nature, and from the universal substance, and in this way from all species and genera, those that are subordinate as well as those that are not subordinate.” The universal, the common designation of all the individuals, is therefore, according to this, not identical with the Self, the ultimate point of subjectivity. “As many universal predicables as there are of any individual thing”—_e.g._ humanity, reason, Being, life, quality, &c.—“so many really different things there are in nature, each of which is really distinct from the other and from that individual, and all these things are in no wise multiplied in themselves, however much the separate predicables are multiplied, which are in every individual of the same kind.” That is the most uncompromising way of stating the independence and isolation of every universal quality in a thing. Occam refutes this, saying: “Nothing which is one in number can, without being changed or multiplied, be present in several subjects or individuals. Science invariably restricts itself to propositions regarding the known; it is, therefore, a matter of no moment whether the terms of the propositions are known things outside of the soul, or only in the soul; and therefore it is not necessary for the sake of science to assume universal things, really distinct from individual things.”
Occam proceeds to state other opinions opposed to that first given; he does not exactly give his own decision, yet in this same passage (Quæst.
8) he, in the main, argues in favour of the opinion “that the universal is not something real that has explicit subjectivity (_esse subjectivum_) neither in the soul nor in the thing. It is something conceived, which, however, has objective reality (_esse objectivum_) in the soul, while the external thing has this objective reality as an explicitly existent subject (_in esse subjectivo_). This comes to pass in the following manner. The understanding, which perceives a thing outside the soul, forms the mental image of a similar thing, so that, if it had productive power, it would, like an artist, exhibit it in an absolutely existing subject, as numerically an individual distinct from any preceding. Should anyone be displeased by this manner of speaking of the mental image as being _formed_, it may be said that the mental image and every universal conception is a quality existing subjectively in the mind, which by its nature is the sign of a thing outside of the soul, just as the spoken word is a sign of the thing, arbitrarily instituted for marking out that thing.” Tennemann says (Vol. VIII. Section II. p. 864): “One result of this theory was that the principle of individuation, which had occupied to such an extent the attention of the Scholastics, was cast aside as utterly unnecessary.” Thus the main question with the Scholastics concerns the definition of the universal, and this was in itself highly important and significant for the culture of more modern times. The universal is the One, but not abstract; it is conceived or thought of as comprehending all things in itself. With Aristotle the universal was, in a judgment, the predicate of the subject in question; in a syllogism it was the _terminus major_. With Plotinus, and especially with Proclus, the One is still incommunicable, and is known only by its subordinate forms.
But because the Christian religion is a revelation, God is no longer therein the unapproachable, incommunicable, a hidden mystery: for the various stages of the progression from Him are verily His manifestation, and the Trinity is thus the revealed. In this way the triads and the One are not distinguished, but these three Persons in the Godhead are themselves God and One, _i.e._ One as it is for another, as in itself relative. The Father, the God of Israel, is this One; the moment of the Son and of the Spirit is the Most High in spiritual and bodily presence, the former in the Church, the latter in Nature. With the Neo-Platonists the universal is, on the contrary, only the first condition of things which then merely opens out and develops; with Plato and Aristotle it is rather the Whole, the All, the All in One.
d. BURIDAN.
Buridan, a Nominalist, inclines to the view of the Determinists that the will is determined by circumstances. Against him is cited the case of the ass which, being placed between two equal bundles of hay, perforce perished from hunger.
Louis XI., in 1473, confiscated the books of the Nominalists and interdicted the teaching of their doctrines, but in the year 1481 this interdict was removed. In the theological and philosophical faculty Aristotle is said to have been interpreted and studied, as were also his commentators, Averroës, Albertus Magnus, and Thomas Aquinas.[44] 5. FORMAL DIALECTIC.
The study of dialectics was carried to a very great height, but it was quite formal in character; this constitutes the fifth point for consideration. With this is closely connected the interminable finding out of _termini technici_. This formal dialectic was very ingenious in devising objects, problems and questions, destitute of all religious and philosophic interest, on which to practise its method of procedure. The last remark that we have, however, in this connection to make regarding the Scholastics is this, that it was not only into the ecclesiastical system that they introduced all possible formal relations of the understanding, but that also objects intelligible in themselves—the intellectual conceptions and religious ideas—they represented as immediately and sensuously real, as brought down into the externality of altogether sensuous relations, and in these relations subjected to systematic investigation. Originally, it is true, the basis was spiritual, but the externality in which it was at once comprehended, made of the spiritual something perfectly unspiritual. It may therefore be said that, on the one hand, the Scholastics showed great profundity in their treatment of Church dogma; and, on the other hand, that they secularized it by placing it in quite inappropriate external relations; thus here we have the worst kind of secularity. For the dogma of the Church explicitly contains, in the historical form of the Christian religion, a number of ordinary conceptions determined in an external way, which are connected with the spiritual, it is true, but trench upon sensuous relationships. If a network of such relationships is then contrived, there arises a host of oppositions, contrasts, contradictions, which have not the very slightest interest for us. It is this aspect of the matter that the Scholastics have taken up and handled with finite dialectic; and it is on this account that the Scholastics in later times were so much ridiculed. Of this I have some examples to give.
a. JULIAN, ARCHBISHOP OF TOLEDO.
Julian, Archbishop of Toledo, sought, with as great earnestness as if the salvation of the human race depended on it, to answer questions which contain an absurd assumption. In doing so he no less gives himself up to petty triflings than do the philologists when they institute investigations regarding Greek accents, metres, and verse-divisions.
For instance, there arises a question of this kind as to the dead. It is a dogma of the Church, that man will rise again; now if to this it be added that he will be clothed with the body, we thereby enter the sensuous sphere. The following were inquiries which arose in connection with this question: “What will be the age of the dead when they rise?
Will they rise as children, youths, grown men, or aged? In what form will they rise? What will be the constitution of their bodies? Will the fat be again fat, and the lean again lean? Will the distinction of sex continue in that future life? Will those who rise again recover all that they lost here in the way of nails and hair?”[45] Thus a special distinction was drawn between the actual dogma, which was indisputable, and the various aspects of the supersensuous world which are connected with that dogma. These were regarded, though often only for the time being, as detached from the doctrinal system of the Church. For the system was not so definitely formulated but that anything in it might have to be proved from the Fathers, until a council or a special synod decided the point. Disputes were also possible regarding the proofs which were given of the content of this system; and besides there was quite a large amount of matter which was open to discussion, and respecting which the Scholastics—with the exception, of course, of the noble men, renowned as _Doctores_ and writers,—expressed themselves in finite syllogisms and forms, which degenerated into an utterly empty and formal craze for disputation. The Scholastic Philosophy is thus the direct opposite of the empirical science of the understanding, with which curiosity is largely mingled, and which, careless of the Notion, follows after facts alone.
b. PASCHASIUS RADBERTUS.
About 840 another subject of discussion was raised, namely, the birth of Christ, whether it was natural or supernatural. This led to a protracted controversy. Paschasius Radbertus wrote two volumes, _De partu beatæ virginis_; and many others wrote and argued on the same topic.[46] They went so far as even to speak of an accoucheur, and to discuss this subject; and many questions were raised, to which our sense of what is fitting forbids us even to turn our thoughts.
God’s wisdom, omnipotence, foresight, and predetermination led in the same way to a host of contradictions in abstract, meaningless, local and trivial particulars, which concern not God. In the works of Petrus Lombardus, where the Trinity, the Creation, and the Fall are dealt with, as also angels and their orders and ranks, questions are found such as whether God’s providence and predetermination would have been possible, had nothing been created; and where God was before the Creation. Thomas of Strasburg answered: _Tunc ubi nunc, in se, quoniam sibi sufficit ipse_.[47] Lombardus goes on to ask “If God can know more than He knows?” as if potentiality and actuality still remained distinguished; “If God retains at all times all power that He has once possessed? Where the angels were after their creation? If the angels have always existed?” A multitude of other questions of this kind are raised regarding the angels. Then he asks: “At what age was Adam created? Why was Eve made from the rib, and not from some other part of the man? Why during sleep, and not when the man was awake? Why did the first human pair not have intercourse in Paradise? How the human race would have been propagated, if man had not sinned? If in Paradise children would have been born with limbs fully grown, and the complete use of their senses? Why it was the Son, and not the Father or the Holy Ghost, who became man?” To do this rests in the very Notion of the Son. “If God could not have also become incarnate in female form?”[48] Additional examples of _quæstiones_ of this kind are given by those who ridiculed such dialectic, for instance by Erasmus in his _Encomium moriæ_: “Could there be several sonships (_filiationes_) in Christ? Is the proposition possible that God the Father hates the Son? Might God not have also taken the form of a woman, or have passed into the devil?
Might He not also have appeared in the form of an ass or of a pumpkin? In what manner would the pumpkin have preached and wrought miracles, and how would it have been crucified?”[49] Thus were intellectual determinations combined and distinguished in a manner altogether without sense or thought. The main point is that the Scholastics were like barbarians in their way of handling divine things and bringing them into sensuous determinations and relations. They thus introduced a completely sensuous rigidity and these altogether external and senseless forms into the purely spiritual, thus bringing it to a lower and unspiritual level; Hans Sachs similarly made a Nürnberg version of sacred history [die göttliche Geschichte vernürnbergert]. In such representations as are given in the Bible of the wrath of God, or of the history of God’s work of creation, it is said that God did this or that, naming some human and homely action. God is certainly not to be looked on as something alien and unapproachable; on the contrary, we are to come to Him with courage and with all our heart. But to bring Him into the province of thought, and strive in earnest after a knowledge of Him, is a very different matter. The reverse of this is to bring forward arguments _pro_ and _contra_, for they decide nothing, and are of no use; they are no more than the assumptions which are only sensuous and finite determinations, and therefore infinite differences and distinctions. This barbarous use of the understanding is utterly irrational; it is like putting a golden necklace on a sow. The One is the Idea of the Christian religion, and it is also the philosophy of the great and noble Aristotle; neither of the two could have been more bedraggled and besmirched, to so low a pass had the Christians brought their spiritual Idea.
6. MYSTICS.
In the above sketch we have mentioned the principal heads which come under our consideration in studying Scholastic philosophy. With regard to this intrusion of distinctions of the understanding and sensuous relations into that which in and for itself and by virtue of its very nature is spiritual, absolute and infinite, it is to be remarked that to this craze for reducing everything to the finite, some noble spirits here and there opposed themselves. As such we must here, in the sixth place, make honourable mention of the many great Scholastics who have been named Mystics, for although they are to be distinguished from the real ecclesiastical Scholastics, they followed upon identical lines, and are closely connected with them. They took but little interest in these discussions and arguments, and maintained their purity in regard to Church doctrines and philosophic speculation. Some of them were pious and spiritual men, who carried on their philosophic studies upon the lines of the Neo-Platonic philosophy, as Scotus Erigena had done in earlier times.
Among them genuine philosophy is to be found—termed also Mysticism; it tends to inwardness and bears a great resemblance to Spinozism. They also derived morality and the religious sentiment from actual feelings, and the meditations and maxims we have from them embody these views.
a. JOHN CHARLIER.
John Charlier, more generally known as Von Jerson or Gerson, was born in b. RAYMUNDUS OF SABUNDE.
Very similar were the views expressed by Raymundus of Sabunde or Sabeyde, a Spaniard of the fifteenth century, and professor at Toulouse about the year 1437. In his _theologia naturalis_, which he handled in a speculative spirit, he dealt with the Nature of things, and with the revelation of God in Nature and in the history of the God-man. He sought to prove to unbelievers the Being, the trinity, the incarnation, the life, and the revelation of God in Nature, and in the history of the God-man, basing his arguments on Reason. From the contemplation of Nature he rises to God; and in the same way he reaches morality from observation of man’s inner nature.[51] This purer and simpler style must be set off against the other, if we are to do justice to the Scholastic theologians in their turn.
c. ROGER BACON.
Roger Bacon treated more especially of physics, but remained without influence. He invented gunpowder, mirrors, telescopes, and died in 1294.[52] d. RAYMUNDUS LULLUS.
Raymundus Lullus, the _Doctor illuminatus_, made himself famous chiefly by the art of thinking which he invented, which was called the _ars magna_. He was born at Majorca in 1234, and was one of those eccentric, unsettled natures whose activity finds vent in all directions. He had a strong inclination towards alchemy and great enthusiasm for the sciences in general, as well as a fiery, restless power of imagination. In his youth he led a reckless life, throwing himself headlong into a round of pleasures; then he retreated to a desert, and had there many visions of Jesus. At this time the impulse shaped itself in his ardent nature to dedicate his life to spreading the blessings of Christianity among the Mohammedans in Asia and Africa. In order to carry on this work of conversion he learned Arabic, travelled through Europe and Asia, sought for assistance from the Pope and all the crowned heads of Europe, without giving up, for all that, his interest in his ‘Art.’ He suffered persecution and passed through many hardships and strange adventures, perils of death, imprisonments, cruelties. He lived long in Paris at the beginning of the fourteenth century, and was the author of well-nigh four hundred works. After a life of the utmost restlessness, he died in 1315, revered as a saint and martyr, his death being the result of cruel treatment which he had suffered in Africa.[53] The chief object aimed at in this man’s ‘Art’ was an enumeration and arrangement of the various concepts under which all objects fall, or of the pure categories according to which they can be determined, so that it may be possible in regard to every object to indicate with ease the conceptions applicable to it. Lullus is so systematic that he becomes at times mechanical. He constructed a diagram in circles, on