He who is really good can never be unhappy. He who is really wise can never be perplexed. He who is really brave is never afraid.

He who learns but does not think, is lost! He who thinks but does not learn is in great danger... Men of superior mind busy themselves first getting at the root of things; when they succeed, the right course is open to them.

At seventy, I could follow the dictates of my own heart; for what I desired no longer overstepped the boundaries of right.

Do not let a leader lead you on a bad path.

A man who does not think and plan long ahead will find trouble right at his door.

When you locate good in yourself, approve of it with determination. When you locate evil in yourself, despise it as something detestable.

If a man withdraws his mind from the love of beauty, and applies it as sincerely to the love of the virtuous; if, in serving his parents, he can exert his utmost strength; if, in serving his prince, he can devote his life; if in his intercourse with his friends, his words are sincere - although men say that he has not learned, I will certainly say that he has.