The best ideas often come when you least expect them.

Tyranny, like hell, is not easily conquered; yet we have this consolation with us, that the harder the conflict, the more glorious the triumph.

我们来到世上是为了尽自己所能给生活增加一些东西，而不是为了从生活中获取我们所能得到的一切。

种一棵树最好的时间是20年前，其次是现在。