The bird a nest, the spider a web, man friendship.

We change our behavior when the pain of staying the same becomes greater than the pain of changing. Consequences give us the pain that motivates us to change.

不要被信条所惑，盲从信条是活在别人的生活里。不要让任何人的意见淹没了你内在的心声。

追求知识是一生的旅程。

In the end, we are all defined by the choices we make.

At the close of our studies， we knew all the past of physics， but nothing of the present and the future.

智力的衡量标准是改变的能力。