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我認(rèn)為數(shù)學(xué)之所以有價(jià)值，是因?yàn)樗哂羞@種令人難以置信的結(jié)構(gòu)，你可以探索和發(fā)現(xiàn)。

Leadership is about making the tough decisions and standing by them.

"Every book is a conversation between the author and the reader."

和一個(gè)人玩一個(gè)小時(shí)對(duì)他的了解，勝過(guò)于一年的對(duì)談。

I must study politics and war that my sons may have liberty to study mathematics and philosophy.