"For fear of death is indeed nothing other than to think oneself wise when one is not; for it is to think one knows what one does not know."

"I know nothing except the fact of my ignorance."

"He is richest who is content with the least, for content is the wealth of nature."

"I am a gadfly who God has attached to the state, and all day long and in all places am always fastening upon you, arousing and persuading and reproaching all of you."

"No man has the right to be an amateur in the matter of physical training. It is a shame for a man to grow old without seeing the beauty and strength of which his body is capable."