For the eyes of the world now look into space, to the moon and to the planets beyond, and we have vowed that we shall not see it governed by a hostile flag of conquest, but by a banner of freedom and peace.

An act of goodness is of itself an act of happiness.

森林的真正价值不能仅用板材英尺来衡量。

The power of mathematics is in its universality and its ability to transcend cultural boundaries.

In programming, everything we do is a special case of something more general -- and often we know it too quickly.

幸福不是没有问题，而是有能力处理问题。