True happiness arises, in the first place, from the enjoyment of one's self, and in the next, from the friendship and conversation of a few select companions.

学习一种新编程语言的唯一方法是用它编写程序。

我一直对人类状况和什么让人们心动感兴趣。

The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.