Every problem in NP can be reduced to the satisfiability problem, which is the cornerstone of computational complexity theory.
世界是你内心的投射。你抱怨生活不公,往往是因为内心失衡;你觉得世界美好,是因为你心中有光。改变心态,就能改变你看世界的角度。
"Light is the language of painting, shadows are its punctuation."
这就是意义所在。你需要它,就好像自己不要忘记。忘记世上还有不是用石头围起来的地方。忘记自己的内心还有你自己的东西,他们碰不到的东西。
"I think the most important thing is to enjoy what you're doing. If you enjoy it, then you'll do it well."