你看，在生活中，很多人知道该做什么，但很少有人真正去做他们知道的事情。知道是不够的！你必须采取行动。

War is an ugly thing， but not the ugliest of things: the decayed and degraded state of moral and patriotic feeling which thinks that nothing is worth a war， is much worse.

Innovation without execution is just an idea.

Sometimes the hardest part isn't letting go but learning to start over.

The end of history will be a very sad time. The struggle for recognition, the willingness to risk one's life for a purely abstract goal, the worldwide ideological struggle that called forth daring, courage, imagination, and idealism, will be replaced by economic calculation, the endless solving of technical problems, environmental concerns, and the satisfaction of sophisticated consumer demands.