“When dealing with people, remember you are not dealing with creatures of logic, but with creatures bristling with prejudice and motivated by pride and vanity.”

“Remember, today is the tomorrow you worried about yesterday. ”

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

“Remember, happiness doesn't depend upon who you are or what you have, it depends solely upon what you think.”

“You can close more business in two months by becoming interested in other people than you can in two years by trying to get people interested in you.”

“You can make more friends in two months by becoming interested in other people than you can in two years by trying to get other people interested in you.”

“Most of the important things in the world have been accomplished by people who have kept on trying when there seemed to be no hope at all.”