Learning is any change in a system that produces a more or less permanent change in its capacity for adapting to its environment.

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

忧患使人生存发展，安逸享乐使人萎靡死亡。

最好的电影是那些让你带着问题离开，而不是答案的电影。

Sustainability and efficiency must go hand in hand in modern energy production.

The question is not whether the thing exists， but whether it has any essence which is capable of existence without us.

数学是过去与未来的对话。

The world is very, very beautiful if you look at it, but most people don't look very much.

我不认为自己是个超级巨星，我只是一个热爱网球的普通人。