行为的目标总是某种驱力或需求的减少。
所以，天地不夸耀自己的明亮，大水不夸耀自己的清澈，大火不夸耀自己的炎烈，有德之君不夸耀自己德行的高远，这样才能做众人的领袖。
Don't fight a battle if you don't gain anything by winning.
追梦的代价
The key is to set realistic customer expectations, and then not to just meet them, but to exceed them—preferably in unexpected and helpful ways.
A mathematician's best work often comes from seeing connections where others see none.