Those convinced against their will are of the same opinion still.

If we want to make friends, let's greet people with animation and enthusiasm.

When two partners always agree, one of them is not necessary." If there is some point you haven't thought about, be thankful if it is brought to your attention.

The only way to get the best of an argument is to avoid it.

Look your audience straight in the eyes, and begin to talk as if every one of them owed you money.

A ship in the harbor is safe, but that is not what ships are built for. Intelligence is like underwear, everyone has it, but you don't have to show it off. The expression a woman wears on her face is more important than the clothes she wears on her back.

Our thoughts make us what we are.