The challenge of leadership is to be strong, but not rude; be kind, but not weak; be bold, but not bully; be thoughtful, but not lazy; be humble, but not timid; be proud, but not arrogant; have humor, but without folly.

The most important thing is to be true to yourself and to the character you're portraying.

Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.

“唯一真正永恒的是人类的心。”