You can’t change the people around you, but you can change the people you choose to be around.

Don’t ask yourself what the world needs. Ask yourself what makes you come alive and then go do that， because what the world needs is people who have come alive.

The essence of mathematics lies in its freedom.

过日子就像是上帝在写小说，就让他放开手去写吧。

"A book is a door. You open it. You step through."

写作是在一个世界中创造另一个世界。