Every seed planted is a commitment to the future.

The doorway to happiness opens from the inside.

数学的本质在于它的自由。

What we have to remember is that we can still do anything. We can change our minds. We can start over.

The best way to solve a problem is to have someone else solve it for you.

当没有人相信你时，你必须相信自己。

The human being is a most curious creature. He thinks he has got one soul, and he has got dozens.