The true measure of a civilization is how it treats its weakest members.
"A life without reflection is a life half-lived."
In mathematics, you don't understand things. You just get used to them.
出自《论语·宪问篇》。遇到事情,不去抱怨上天,也不要去责备别人,应当能够扪心自问,好好地反省自己。
I’m not a guy that’s going to let myself down.