The only thing that can make you a hero is your heart.

对你帮助最大的书是那些让你思考最多的书。

Never stop learning, because the world never stops changing.

The ability to be alone is the ability to love. It may look paradoxical to you, but it’s not. It is an existential truth: only those who can be alone are capable of love, of sharing, of going into the deepest core of another human being—without possessing the other, without becoming dependent on the other, without reducing the other to a thing, and without becoming addicted to the other.

Sometimes the hardest thing and the right thing are the same.

对称性不仅是自然的一种属性，而且是寻找物理定律的指导原则。