"The security of quantum communication comes from the laws of physics, not from computational complexity."

过度捕捞就像透支信用卡，终将付出沉重的代价。

You don't learn to walk by following rules. You learn by doing, and by falling over.

母子关系是矛盾的，在某种意义上，是悲剧性的。它需要母亲最强烈的爱，然而这种爱必须帮助孩子离开母亲，变得完全独立。