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

"Time is what keeps the light from reaching us."

我對所謂的成功不感興趣。我對實現成功的過程感興趣。

To do mathematics is to engage in an act of discovery and conjecture, intuition and inspiration.

People with a sense of fulfillment think it a good world and would like to conserve it as it is, while the frustrated favor radical change.