成功不是终点，失败也非致命，重要的是继续前进的勇气。

每一代人都应视地球为信托。

所以,即使做很困难的事情,也一定能够达到目的,没听说过想达到自己的愿望,而能回避困难的。

In mathematics, the art of proposing a question must be held of higher value than solving it.

The deterioration of every government begins with the decay of the principles on which it was founded.

The Internet is a tool for the empowerment of the individual.