True innovation comes from a deep understanding of existing problems.
Lisp is worth learning for the profound enlightenment experience you will have when you finally get it; that experience will make you a better programmer for the rest of your days, even if you never actually use Lisp itself a lot.
The mind is nature's instrument for dealing with reality.
创造建筑就是建立秩序。建立什么秩序?功能和物体。
成功不是终点,失败也不是致命的:重要的是继续前进的勇气。