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

We shall not cease from exploration, and the end of all our exploring will be to arrive where we started and know the place for the first time.

Concerning the gods, I cannot know either that they exist or that they do not exist, nor what form they might have, for there is much to prevent one's knowing: the obscurity of the subject and the shortness of man's life.

The only way to achieve the impossible is to believe it is possible.

在困難中蘊含著機會。

Innovation is the inexhaustible driving force for the development of enterprises.

如果我們中的任何天主教徒，沒有必要的科學知識，將科學審查顯示為錯誤的東西作為教條提出，我們信仰的真理就會在異教徒中成為笑柄。