The environment shapes behavior through the mechanism of reinforcement.

哲学的任务是使世界更加人性化。

On pivoting: "If you're not stubborn， you'll give up on experiments too soon. And if you're not flexible， you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve."

In the end, we will remember not the words of our enemies, but the silence of our friends.

预测未来的最好方法就是发明它。

I pursue no objectives, no systems, no tendency; I have no program, no style, no direction.