精品无码久久久久久国产_成人午夜在线视频一区_亚洲最大的av网站_亚洲欧美综合区自拍另类_91精品国产一区_日韩精品中文在线观看_一道本无吗dⅴd在线播放一区_国产精品旅馆在线_欧美午夜久久久_亚洲自拍在线观看_黑人精品xxx一区一二区_亚洲精品日韩久久久_在线视频一区二区_国产欧美久久一区二区_中文字幕精品在线视频_成人欧美在线观看

A good mathematician is someone who can see analogies between theorems; a great mathematician is someone who can see analogies between analogies.

生命的紀(jì)律是秩序；智力的紀(jì)律是專注；行為的紀(jì)律是順從。

"Art is not about answers, it's about questions."

我對什么是重要的，什么是不重要的有不同的理解。

"Love is all that matters in the end."