译文：过错虽然千端万绪,但归纳起来都是一心造作。如果我的内心不妄动,过错又如何产生呢?

The essence of mathematics lies in its freedom.

When you are young, you think that the world is a place where you can live as you choose. But as you get older, you realize that the world is a place where you have to live as you must.

重要的不是金钱，而是你爱的人。