Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.
The easiest way to solve a problem is to deny it exists.
当你写作时，你试图发现一些你不知道的东西。
It really matters whether people are working on generating clean energy or improving transportation or making the Internet work better and all those things. And small groups of people can have a really huge impact.