He said that there was one only good, namely, knowledge; and one only evil, namely, ignorance.

[N]either in war nor yet at law ought any man to use every way of escaping death. For often in battle there is no doubt that if a man will throw away his arms, and fall on his knees before his pursuers, he may escape death; and in other dangers there are other ways of escaping death, if a man is willing to say and do anything. The difficulty, my friends, is not in avoiding death, but in avoiding unrighteousness; for that runs faster than death.

Living or dead, to a good man there can come no evil.

...one thing I am ready to fight for as long as I can, in word and act: that is, that we shall be better, braver and more active men if we believe it right to look for what we don't know than if we believe there is no point in looking because what we don't know we can never discover.

The secret of happiness, you see, is not found in seeking more, but in developing the capacity to enjoy less.

If I had engaged in politics, O men of Athens, I should have perished long ago, and done no good either to you or to myself.

There is but one evil, ignorance.