Every problem in mathematics is a puzzle waiting to be solved, and the joy is in the solving.

The world is full of people who will tell you what you can't do. You don't need them. You already know what you can't do. What you need is someone to tell you what you can.

The best way to predict the future is to create it.

我们对野生动物的爱与对人类之爱有着天壤之别。