"Contentment is natural wealth, luxury is artificial poverty."

"The unexamined life is not worth living."

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

"An unconsidered life is not one worth living."

"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?"

"By all means marry; if you get a good wife, you’ll become happy; if you get a bad one, you’ll become a philosopher."