The past is a cupboard full of light and all you have to do is find the key that opens the door.

你得先学会爬才能走，先学会走才能跑。

"You don't get to choose if you get hurt in this world, but you do have some say in who hurts you."

科学中最重要的不是获得新的事实，而是发现新的思考方式。

数学中最深刻的思想往往源于最简单的观察。