“Criticism is dangerous, because it wounds a person's precious pride, hurts his sense of importance, and arouses resentment.”

“arouse in the other person an eager want. He who can do this has the whole world with him. He who cannot walks a lonely way.”

“Hurting a man in his dignity is a crime.”

“Let's find and remedy all our weaknesses before our enemies get a chance to say a word. That is what Charles Darwin did. ...When Darwin completed the manuscript of his immortal book "The Origin Of Species" he realized that the publication of his revolutionary concept of creation would rock the intellectual and religious worlds. So he became his own critic and spent another 15 years checking his data, challenging his reasoning, and criticizing his conclusions.”

“Our fatigue is often caused not by work, but by worry, frustration and resentment.”

“Today is our most precious possession. It is our only sure possession.”

“The chronic kicker, even the most violent critic, will frequently soften and be subdued in the presence of a patient, sympathetic listener— a listener who will be silent while the irate fault-finder dilates like a king cobra and spews the poison out of his system.”