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

不要歸罪于天地陰陽的變化，一切都應責怪人事；不要對圣人抱有過高的奢望，一切都應求諸自身。

"Prime numbers are what is left when you have taken all the patterns away. I think prime numbers are like life. They are very logical but you could never work out the rules, even if you spent all your time thinking about them."

你必須對你所做的事情充滿熱情。

"Writing is a way of talking without being interrupted."

Scientific rigor must never be compromised by commercial pressures.

The most important thing is to always keep the user at the center of everything we do.