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

"Freedom is not something that anybody can be given. Freedom is something people take, and people are as free as they want to be."

最可怕的事情就是不容忍的烏托邦。

人生就是當(dāng)你忙著制定其他計劃時發(fā)生的事情。

True innovation in science often comes from developing tools that let us see the world in completely new ways.

每天起床的時候，爭取變得比你昨天更聰明一點(diǎn)。