Socrates

"Be slow to fall into friendship; but when thou art in, continue firm and constant."

"I decided that it was not wisdom that enabled [poets] to write their poetry, but a kind of instinct or inspiration, such as you find in seers and prophets who deliver all their sublime messages without knowing in the least what they mean."

"I only know that I know nothing"

"Be kind, for everyone you meet is fighting a hard battle."

"Beware the barrenness of a busy life."

"The unexamined life is not worth living."

"The only true wisdom is in knowing you know nothing."

"I only know that I know nothing"

"The unexamined life is not worth living."

"Employ your time in improving yourself by other men's writings so that you shall come easily by what others have labored hard for."

"Be slow to fall into friendship; but when thou art in, continue firm and constant."

"The unexamined life is not worth living."

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

"The unexamined life is not worth living."

"Be slow to fall into friendship; but when thou art in, continue firm and constant."

"The children now love luxury. They have bad manners, contempt for authority; they show disrespect for elders and love chatter in place of exercise."

"Are you not ashamed of caring so much for the making of money and for fame and prestige, when you neither think nor care about wisdom and truth and the improvement of your soul?"

"Education is the kindling of a flame, not the filling of a vessel."

"The beginning of wisdom is the definition of terms."

"I only know that I know nothing"