The pessimistsees difficulty in every opportunity. The optimist sees opportunity in everydifficulty.

The true test of intelligence is not how much people know how to do, but how they behave when they don't know what to do.

He that can't endure the bad, will not live to see thegood.

Theonly difference between stumbling blocks and stepping stones is the way inwhich we use them.

A man does not know what he is saying until he knows what he is not saying.

Well-managed,cooperative conflict contributes to the productivity and innovativeness oforganizations and the competence and well-being of people.

Sincerity is impossible, unless it pervades the whole being, and the pretence of it saps the very foundation of character

The exercise of power is determined by thousands ofinteractions between the world of the powerful and that of the powerless, allthe more so because these worlds are never divided by a sharp line: everyonehas a small part of himself in both.

In God we trust; all others pay cash.

Talkingjaw-jaw is always better than war-war.

It is a strange desire, to seek power, and to loseliberty; or to seek power over others, and to lose power over a man's self.

Can we do good to the world? In an absolute sense, no; in a relative sense, yes.