“When you learn, teach, when you get, give.”

“The father’s job is to teach his children how to be warriors, to give them the confidence to get on the horse to ride into battle when it’s necessary to do so. If you don’t get that from your father, you have to teach yourself.”

“You only learn when you give your whole being to something. When you give your whole being to mathematics,you learn; but when you are in a state of contradiction, when you do not want to learn but are forced to learn, then it becomes merely a process of accumulation. To learn is like reading a novel with innumerable characters; it requires your full attention, not contradictory attention.”

“When you are in high school, you don't give much thought to what you can't do. For most people, that gets learned later, and for still fewer, gets unlearned for the rest of life.”

“In learning you will teach, and in teaching you will learn.”

“When one teaches, two learn.”