"The goal of mathematics is to understand the universe."

译文：坏人未必天生就坏，往往是习惯成了本性(梁上君子典故)。

译文：我衰老得太厉害了!感慨平生交游的朋友渐渐零落，如今还剩下几个?白发空自垂下三千丈，对人间万事只能付之一笑。试问什么事物能让我真正欢喜?

"We are all the sum of our memories, but what happens when those memories are erased or altered? Do we become someone else, or do we remain the same person, just with a different past?"

今天对自由民主最严重的威胁不是来自共产主义或法西斯主义等敌对意识形态，而是来自内部——来自民粹主义的兴起和民主规范的侵蚀。