“He who does not understand your silence will probably not understand your words.”

“The recipe for perpetual ignorance is: Be satisfied with your opinions and content with your knowledge.”

“Never explain―your friends do not need it and your enemies will not believe you anyway.”

“Life is a checkerboard, and the player opposite you is time. If you hesitate before moving, or neglect to move promptly, your men will be wiped off the board by time. You are playing against a partner who will not tolerate indecision!”

“When you grow suspicious of a person and begin a system of espionage upon him, your punishment will be that you will find your suspicions true.”

“Football: A sport that bears the same relation to education that bullfighting does to agriculture.”

“It does not take much strength to do things, but it requires a great deal of strength to decide what to do.”