The theory of computation is not just about solving problems, but also about understanding the limits of what can be computed.
The past is a shadow that follows us, but it doesn't have to define us.
The past is never dead. It's not even past.
要是这世上少点同情心,这世界就不会有那么多麻烦。.
孔子说:“君子有三件事要警戒:年轻时,血气还不成熟,要戒女色;年壮时,血气正旺盛,要戒争斗;年老时,血气已衰落,要戒贪婪。”