当没有人相信你时,你必须相信自己。
The real question is not whether machines think but whether men do.
When everything is easy one quickly gets stupid.
The desires, and other passions of man, in themselves, are in his own power; his real difficulties are, to know when they are to be controlled, and when not.
The worst thing in the world that can happen to you if you’re an engineer that has given his life to something is for someone to rip it off and put their name on it.