The past is always there, and it's always different every time you look at it.
过去永远在那里，而且每次你回头看它时，它都不同。
做数学的艺术在于找到包含所有普遍性萌芽的特殊情况。
"You can’t just give up on someone because the situation’s not ideal."
真相是，我们都是野蛮人。
The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.