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

You think you know when you can learn, are more sure when you can write, even more when you can teach, but certain when you can program.

"I am not interested in the individual, but in the whole."

Safety must remain our top priority in everything we do.

藝術(shù)不是一件東西；它是一種方式。

The Langlands program is a reflection of the unity of mathematical thought.

我不是現(xiàn)代藝術(shù)家，我是永恒的藝術(shù)家。