数学家是将咖啡转化为定理的装置。
A mathematician is a device for turning coffee into theorems.
当没有人相信你时，你必须相信自己。
It is a first principle of human action that a man does what he believes will satisfy his desires.
格瓦拉形容他的女儿
The test of a first-rate intelligence is the ability to hold two opposed ideas in mind at the same time and still retain the ability to function.