Be true to thine own self.

The only place where success comes before work is in the dictionary.There is only one good, knowledge, and one evil, ignorance.

The invention of writing will produce forgetfulness in the minds of those who learn to use it, because they will not practice their memory. Their trust in writing, produced by external characters which are no part of themselves, will discourage the use of their own memory within them. You have invented an elixir not of memory, but of reminding; and you offer your pupils the appearance of wisdom, not true wisdom.

When you propose ridiculous things to believe, too many men will choose to believe nothing at all.

There are two kinds of disease of the soul, vice and ignorance.

The uninitiated are those who believe in nothing except what they can grasp in their hands, and who deny the existence of all that is invisible.

As to marriage or celibacy, let a man take which course he will, he will be sure to repent