When you don’t know how much to pay someone for a particular task， ask them “what would be fair” and their answer usually is.

你无法和一个坏人做成一个好交易。

灵魂不灭。

Mathematics is the music of reason.

The aim of education should be to teach us rather how to think, than what to think—rather to improve our minds, so as to enable us to think for ourselves, than to load the memory with thoughts of other men.

做出伟大工作的唯一方法是热爱你所做的事情。