伦理学是对什么是善的一般性探究。

"Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding."

数学是逻辑思想的诗歌。

最古老、最简短的词语——'是'和'否'——是需要最多思考的。

I can't say I'm outraged. Other people are even more outraged than me. They feel that I am too dismissive of the honors that they value.

There is no point treating a depressed person as though she were just feeling sad, saying, 'There now, hang on, you'll get over it.' Sadness is more or less like a head cold- with patience, it passes. Depression is like cancer.

The key to success is to keep going even when things seem impossible.

The heart is a compass that doesn’t always point north.

The most important thing in investing is to avoid losing money.

我不怕黑暗，我怕黑暗中的东西。