永远不要低估人类精神的力量。
Never underestimate the power of the human spirit.
PID控制器的本质在于它能够根据系统的过去和现在状态预测其未来行为。
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.
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.
I think the key to making a good film is to make sure that every single scene is as good as it can be.