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

I have always preferred working on concrete problems rather than abstract theories.

Pass you the love like a relay

Stories are light. Light is precious in a world so dark.

Never stop learning, because the world never stops changing.

The most valuable of all talents is that of never using two words when one will do.

優化不是追求完美，而是在現有信息和資源下做出最佳決策。

A little philosophy inclineth man's mind to atheism， but depth in philosophy bringeth men's minds about to religion.