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

Writing is making sense of life. You work your whole life and perhaps you've made sense of one small area.

"Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding."

Education is an ornament in prosperity and a refuge in adversity.

All men are immortal， but those who are not educated are immortal in a lower and less enviable sense.

Your voice is your power, never let anyone silence it.

切勿對已經敞開心胸的人閉上雙唇。

書籍是連接我們與未來的橋梁。