He who is to be promoted to that world should know everything, or at least, as says (Plato),[344] he should be as learned as possible. In his first generation he should have descended here below to form a philosopher, a musician, a lover. That is the kind of men whose nature makes them most suitable to be raised to the intelligible world. But how are we going to raise them? Does a single method suffice for all? Does not each of them need a special method? Doubtless. There are two methods to follow: the one for those who rise to the intelligible world from here below, and the other for those who have already reached there. We shall start by the first of these two methods; then comes that of the men who have already achieved access to the intelligible world, and who have, so to speak, already taken root there. Even these must ceaselessly progress till they have reached the summit; for one must stop only when one has reached the supreme term.
RETURN OF THE SOUL OF THE PHILOSOPHER, MUSICIAN AND LOVER.
The latter road of progress must here be left aside (to be taken up later),[345] to discuss here fully the first, explaining the operation of the return of the soul to the intelligible world. Three kinds of men offer themselves to our examination: the philosopher, the musician, and the lover. These three must clearly be distinguished, beginning by determining the nature and character of the musician.
HOW THE MUSICIAN RISES TO THE INTELLIGIBLE WORLD.
The musician allows himself to be easily moved by beauty, and admires it greatly; but he is not able by himself to achieve the intuition of the beautiful. He needs the stimulation of external impressions. Just as some timorous being is awakened by the least noise, the musician is sensitive to the beauty of the voice and of harmonies. He avoids all that seems contrary to the laws of harmony and of unity, and enjoys rhythm and melodies in instrumental and vocal music. After these purely sensual intonations, rhythm and tunes, he will surely in them come to distinguish form from matter, and to contemplate the beauty existing in their proportions and relations. He will have to be taught that what excites his admiration in these things, is their intelligible harmony, the beauty it contains, and, in short, beauty absolute, and not particular. He will have to be introduced to philosophy by arguments that will lead him to recognize truths that he ignored, though he possessed them instinctively. Such arguments will be specified elsewhere.[346]
HOW THE LOVER RISES TO THE INTELLIGIBLE.
2. The musician can rise to the rank of the lover, and either remain there, or rise still higher. But the lover has some reminiscence of the beautiful; but as here below he is separated (from it, he is incapable of clearly knowing what it is). Charmed with the beautiful objects that meet his views, he falls into an ecstasy. He must therefore be taught not to content himself with thus admiring a single body, but, by reason, to embrace all bodies that reveal beauty; showing him what is identical in all, informing him that it is something alien to the bodies, which comes from elsewhere, and which exists even in a higher degree in the objects of another nature; citing, as examples, noble occupations, and beautiful laws. He will be shown that beauty is found in the arts, the sciences, the virtues, all of which are suitable means of familiarizing the lover with the taste of incorporeal things. He will then be made to see that beauty is one, and he will be shown the element which, in every object, constitutes beauty. From virtues he will be led to progress to intelligence and essence, while from there he will have nothing else to do but to progress towards the supreme goal.
HOW THE PHILOSOPHER RISES TO THE INTELLIGIBLE WORLD.
3. The philosopher is naturally disposed to rise to the intelligible world. Borne on by light wings, he rushes thither without needing to learn to disengage himself from sense-objects, as do the preceding men. His only uncertainty will concern the road to be followed, all he will need will be a guide. He must therefore be shown the road; he must be helped to detach himself entirely from sense-objects, himself already possessing, as he does, the desire, being since a long while already detached therefrom by his nature. For this purpose he will be invited to apply himself to mathematics, so as to accustom him to think of incorporeal things, to believe in their existence. Being desirous of instruction, he will learn them easily; as, by his nature, he is already virtuous, he will need no more than promotion to the perfection of virtue. After mathematics, he will be taught dialectics, which will perfect him.