Strategy is about making choices, trade-offs; it's about deliberately choosing to be different.
Power resides where men believe it resides. It's a trick, a shadow on the wall. 
人类能够达到的最高活动是为了理解而学习,因为理解就是自由。
The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.
To love is to find meaning in another's existence.