When I look at the world I'm pessimistic, but when I look at people I am optimistic.

听我说，朋友，希望是件危险的事。希望能叫人发疯。

创新不仅仅是关于技术，更是关于理解屏幕背后的人。

Life is a leaf of paper white，thereon each of us may write his word or two.

Your life is not a result of what happens to you， but of the choices you make.

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.

繁荣的森林是成功的最终衡量标准。