色多多在线观看播放-色多多在线观看高清免费-色多多在线观看视频-色多多在线看-欧美aaaaa性bbbbb小妇-欧美aaaav免费大片

Computer programming is an art, because it applies accumulated knowledge to the world, because it requires skill and ingenuity, and especially because it produces objects of beauty.

The most dangerous thing is to do nothing.

The biggest challenge is to be yourself in a world that is trying to make you like everyone else.

譯文：江河東流永不回頭，生死其實就像一場夢。

A mathematician's work is never done; there are always new questions to ask and new mysteries to solve.

數學是一項協作的努力。沒有人可以單獨完成。