War is the province of danger and therefore courage above all things is the first quality of a warrior.

The best books are those that make you see the world anew.

计算机科学中的挑战不仅仅是解决问题，而是找到正确的问题来解决。

And, after all, what is a fashion? From the artistic point of view, it is usually a form of ugliness so intolerable that we have to alter it every six months.

数学的力量在于它简化复杂事物的能力。

"We are all astronauts on a little spaceship called Earth."