语言是理解高级心理过程的关键。

The most dangerous risk of all is not taking one.

A mind needs books as a sword needs a whetstone if it is to keep its edge.

Don’t be afraid to fail, be afraid not to try.

In the past the man has been first; in the future the system must be first.

I am willing to put myself through anything; temporary pain or discomfort means nothing to me as long as I can see that the experience will take me to a new level.

The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter.