You can’t live in the world without an idea of the world, but it’s impossible to live in the world with your idea of the world.
你不能没有一个对世界的概念而活，但也不可能带着你对世界的概念而活。
数学证明的优雅在于它的简洁和清晰。
Success is the sum of small efforts, repeated day in and day out.
The only thing you have to fear is fear itself.
早规划、早行动，方能成功。
"To write is to remember, and to remember is to live twice."
The difference between stupid and intelligent people—and this is true whether or not they are well-educated—is that intelligent people can handle subtlety.