The most interesting art is the art that makes you think.

As in geometry the most natural way of beginning is from a mathematical point, so is the same method in observations and natural history the most genuine, simple, and instructive.

计算复杂性的本质是理解什么可以被有效地计算的极限。

不要让自己被贫瘠的怀疑主义所污染。

成功不是幸福的关键，幸福才是成功的关键。