The first question I ask myself when something doesn't seem to be beautiful is why do I think it's not beautiful. And very shortly you discover that there is no reason.
永远不要停止学习;一旦停止,你就会开始落后。
Every problem in NP can be reduced to the satisfiability problem, which is the cornerstone of computational complexity theory.
每个采石场都有两个故事:地下的岩层和周围的社区。明智的领导者会倾听两者。