Every action has its pleasures and its price.

Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.

"We are all in the gutter, but some of us are looking at the stars."

积极情绪拓宽我们的意识，鼓励新颖、多样和探索性的思想和行动。随着时间的推移，这种拓宽的行为模式会建立技能和资源。

我认为你能做的最好的事情就是对自己和他人友善。

If you want something you’ve never had, you must be willing to do something you’ve never done.