I alone know I am wise because I alone know I know nothing.

The soul then, as being immortal, and having been born again many times, and having seen all things that exist, whether in this world or in the world below, has knowledge of them all . . . all enquiry and all learning is but recollection.

The Delphic Oracle said I was the wisest of all the Greeks. It is because that I alone, of all the Greeks, know that I know nothing.

True wisdom comes to each of us when we realize how little we understand about life, ourselves, and the world around us.

Our purpose in founding the city was not to make any one class in it surpassingly happy, but to make the city as a whole as happyas possible.

What a lot of things there are a man can do without.

You never know a line is crooked unless you have a straight one to put next to it.