平凡与非凡的区别在于那一点额外的努力。

数学是上帝用来书写宇宙的语言。

我认为孩子们天生好奇，对新想法持开放态度，这是我在书中试图捕捉的东西。

The human mind is so complex and things are so tangled up with each other that, to explain a blade of grass, one would have to make a diagram of the universe.

正向强化的实施方式比其数量更重要。