你的时间有限，所以不要浪费在过别人的生活上。
Your time is limited, so don’t waste it living someone else’s life.
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
译文：江河东流永不回头，生死其实就像一场梦。
An act of goodness is of itself an act of happiness.
光是理解世界的关键。
人不应该相信或不相信，而应该保持怀疑。
The pursuit of knowledge is a journey that never ends.