For he who would proceed aright... should begin in youth to visit beautiful forms... out of that he should create fair thoughts; and soon he will of himself perceive that the beauty of one form is akin to the beauty of another, and that beauty in every form is one and the same.
The soul of him who has education is whole and perfect and escapes the worst disease, but, if a man's education be neglected, he walks lamely through life and returns good for nothing to the world below.
The good are like one another, and friends to one another; and ... the bad, as is often said of them, are never at unity with one another or with themselves, but are passionate and restless: and that which is at variance and enmity with itself is not likely to be in union or harmony with any other thing.
The greatest mistake in the treatment of diseases is that there are physicians for the body and physicians for the soul, although the two cannot be separated.
. . . the triumph of my art is in thoroughly examining whether the thought which the mind of the young man brings forth is a false idol or a noble and true birth.
The true musician is attuned to a fairer harmony than that of the lyre... for he truly has in his own life a harmony of words and deeds arranged in the Dorian mode. Such a one makes me joyous with the sound of his voice, so eager am I in drinking in his words.
Take a look around, then, and see that none of the uninitiated are listening. Now by the uninitiated I mean the people who believe in nothing but what they can grasp in their hands, and who will not allow that action or generation or anything invisible can have real existence.