算法设计既是一门艺术也是一门科学。

这个世界惟有两样东西让我们的心灵感到深深的震撼，一是我们头顶上灿烂的星空,一是我们内心崇高的道德法则。

Time is your most valuable asset—don’t waste it on things that don’t matter.

Truth is like a blanket that always leaves your feet cold. You push it, stretch it, it'll never be enough. You kick at it, beat it, it'll never cover any of us. From the moment we enter crying to the moment we leave dying, it will just cover your face as you wail and cry and scream。