我不敢说数学和疯狂之间有直接关系，但毫无疑问，伟大的数学家们都有狂躁、妄想和精神分裂的症状。

国际货币体系就像一种语言；如果每个人都使用同一种语言，沟通就会容易得多。

成功是日复一日重复的小努力的总和。

In business, as in life, integrity is the only currency that never loses value.

The mind is a system for making life possible.

I am not lonely. I am alone. There is a difference.

I am the happiest creature in the world. Perhaps other people have said so before, but not one with such justice. I am happier even than Jane; she only smiles, I laugh.