The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.

What man actually needs is not a tensionless state but rather the striving and struggling for some goal worthy of him.

好奇心是创新的引擎。

When you lead， your real job is to create more leaders， not more followers.

I believe in being strong when everything seems to be going wrong. I believe that happy girls are the prettiest girls. I believe that tomorrow is another day and I believe in miracles.