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。
You can't love everybody, but you can be kind to everybody.
可持续性不再是一个选项;它是一个商业必须。
One can't proceed from the informal to the formal by formal means.