The good man is the only excellent musician, because he gives forth a perfect harmony not with a lyre or other instrument but with the whole of his life.

Human behavior flows from three main sources: desire, emotion, and knowledge.

But this is not difficult, O Athenians! to escape death; but it is much more difficult to avoid depravity, for it runs swifter than death. And now I, being slow and aged, am overtaken by the slower of the two; but my accusers, being strong and active, have been overtaken by the swifter, wickedness. And now I depart, condemned by you to death; but they condemned by truth, as guilty of iniquity and injustice: and I abide my sentence, and so do they. These things, perhaps, ought so to be, and I think that they are for the best.

For this feeling of wonder shows that you are a philosopher, since wonder is the only beginning of philosophy.

May not the wolf, as the proverb says, claim a hearing?

And the first step, as you know, is always what matters most, particularly when we are dealing with those who are young and tender. That is the time when they are taking shape and when any impression we choose to make leaves a permanent mark.

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.