Ensayos de Michel de Montaigne, volumen 18

but it must be set on going with discretion; for the body receives the offices imposed upon it just according to what they are; the mind often extends and makes them heavier at its own expense, giving them what measure it pleases. Men perform like things with several sorts of endeavour, and different contention of will; the one does well enough without the other; for how many people hazard themselves every day in war without any concern which way it goes; and thrust themselves into the dangers of battles, the loss of which will not break their next night's sleep? and such a man may be at home, out of the danger which he durst not have looked upon, who is more passionately concerned for the issue of this war, and whose soul is more anxious about events than the soldier who therein stakes his blood and his life. I could have engaged myself in public employments without quitting my own matters a nail's breadth, and have given myself to others without abandoning myself. This sharpness and violence of desires more hinder than they advance the execution of what we undertake; fill us with impatience against slow or contrary events, and with heat and suspicion against those with whom we have to do. We never carry on that thing well by which we are prepossessed and led: "Male cuncta ministrat Impetus." ["Impulse manages all things ill."--Statius, Thebaid, x. 704.] He who therein employs only his judgment and address proceeds more cheerfully: he counterfeits, he gives way, he defers quite at his ease, according to the necessities of occasions; he fails in his attempt without trouble and affliction, ready and entire for a new enterprise; he always marches with the bridle in his hand.…