A new academic year brings new QsOTD. Plotinus, Ennead 1.3:
The musician we may think of as being exceedingly quick to beauty, drawn in a very rapture to it: somewhat slow to stir of his own impulse, he answers at once to the outer stimulus: as the timid are sensitive to noise so he to tones and the beauty they convey; all that offends against unison or harmony in melodies or rhythms repels him; he longs for measure and shapely pattern.
This natural tendency must be made the starting-point to such a man; he must be drawn by the tone, rhythm, and design in things of sense: he must learn to distinguish the material forms from the Authentic-Existent which is the source of al these correspondences and of the entire reasoned scheme in the work of art: he must be led to the Beauty that manifests itself through these forms; he must be shown that what ravished him was no other than the Harmony of the Intellectual world and the Beauty in that sphere, not some one shape of beauty but the All-Beauty, the Absolute Beauty; and the truths of philosophy must be implanted in him to lead him to faith in that which, unknowing it, he possesses within himself….
The born lover, to whose degree the musician may also attain—and then either come to a stand or pass beyond—has a certain memory of beauty but, severed from it now, he no longer comprehends it: spellbound by visible loveliness he clings amazed about that. His lesson must be to fall down no longer in bewildered delight before some one embodied form; he must be led, under a system of mental discipline, to physical beauty everywhere and made to discern the One Principle underlying all, a Principle apart from the material forms, springing from another source, and elsewhere more truly present. The beauty, for example, in a noble course of life and in an admirably organized social system may be pointed out to him—a first training this in the loveliness of the immaterial—he must learn to recognize the beauty in the arts, sciences, virtues; then these severed and particular forms must be brought under the one principle by the explanation of their origin. From the virtues he is to be led to the Intellectual-Principle, to the Authentic-Existent; thence onward, he treads the upward way.
The metaphysician, equipped by that very character, winged already and not, like those others, in need of disengagement, stirring of himself towards the supernal but doubting of the way, needs only a guide. He must be shown, then, and set free, willing by his very temperament and long practised in freedom.
Mathematics, which as a student by nature he will take very easily, will be prescribed to train him to abstract thought and to faith in the unembodied; a moral being by native disposition, he must be led to make his virtue perfect; after the Mathematics he must be put through a course in Dialectic and made an adept in the science.