Criticism is futile because it puts a person on the defensive and usually makes them strive to justify themselves. Criticism is dangerous, because it wounds a person's precious pride, hurts their sense of importance, and arouses resentment.

If you want enemies, excel your friends; but if you want friends, let your friends excel you.

By all means take thought for the tomorrow, yes, careful thought and planning and preparation. But have no anxiety.

The world is filled with interesting things to do. Don't lead a dull life in such a thrilling world.

Give the other person a fine reputation to live up to.

The expression a woman wears on her face is far more important than the clothes she wears on her back.

Nobody is more persuasive than a good listener