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

The truth is more magical - in the best and most exciting sense of the word - than any myth or made-up mystery or miracle.

Mathematics is not a careful march down a well-cleared highway, but a journey into a strange wilderness, where the explorers often get lost.

"Writing is like making love. Don’t worry about the orgasm, just concentrate on the process."

當數據與經驗結合時，才能做出最佳決策。

一個人笑的時間是與眾神共度的時間。

不要讓任何人掩蓋你的光芒。