I always felt that my greatest asset was not my physical ability, it was my mental ability.
The most important thing in mathematics is to ask the right questions.
"You can’t just sit down and write a book. That’s not how books get written. Books get written by living your life, by being open to the world, by paying attention."
The true teacher defends his pupils against his own personal influence. He inspires self-distrust. He guides their eyes from himself to the spirit that quickens him. He will have no disciple.