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

Little else is requisite to carry a state to the highest degree of opulence from the lowest barbarism but peace， easy taxes， and a tolerable administration of justice.

The beauty of mathematics lies in its ability to reveal the hidden structures of reality.

算法研究不僅在于解決問題，還在于理解計算可能性的極限。

詩歌應當像利劍一樣鋒利。

發明是需求之母。

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."

教育者的角色是賦予學生權力，使他們成為自己社區中的變革推動者。