The utility of an idea determines its place in mental life.
一个观念的效用决定了它在精神生活中的地位。
"The best way to learn is to do it, to make mistakes, and to learn from them."
物理系统的对称性反映在其能级的简并性上。
Every day is a new opportunity to change your life.
If somebody offers you an amazing opportunity but you are not sure you can do it, say yes – then learn how to do it later!
追求数学真理就是追求美、优雅和简洁。