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

The world owes all its onward impulses to men ill at ease. The happy man inevitably confines himself within ancient limits.

效率和道德必須齊頭并進(jìn)。今天的偷工減料明天將讓我們付出沉重代價(jià)。

The quest for understanding is the noblest pursuit of the human spirit.

我不是紅脖子議程的一部分

科學(xué)的進(jìn)步不僅是通過回答問題，而是通過提出更好的問題。

當(dāng)你認(rèn)為你理解了一部偉大的文學(xué)作品時(shí)，你可能是錯(cuò)的。

I do not lack the courage to think a thought all the way through, and thus far I have encountered no thought that I have feared.

There's a politics to how materials are used.