Social progress requires the organic combination of individual freedom and social responsibility.

讲述完全真相的方法只有两种：匿名或者死后。

The question is not whether the thing exists， but whether it has any essence which is capable of existence without us.

网络不仅仅是连接机器，它连接的是人。

We choose to go to the moon in this decade and do the other things, not because they are easy, but because they are hard, because that goal will serve to organize and measure the best of our energies and skills, because that challenge is one that we are willing to accept, one we are unwilling to postpone, and one which we intend to win, and the others, too.

Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.