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真正的朋友是能看到你眼中痛苦的人，而其他人都只相信你臉上的笑容。

The relation between what we see and what we know is never settled.

The Erd?s discrepancy problem fascinated me because it was so simple to state yet so deep in its implications.

書籍是反映我們潛力的鏡子。

I don't believe in heroes, but I believe in people who do heroic things.

譯文：內心澄凈，我們做事就會明澈如水，就像平靜的水面能映照萬物一般；品行高潔，我們就會脫俗，如同流云飄過無礙的天空。賞析：靜以修身，儉以養德。一個人的內心純凈，做事就會光明磊落，品行高潔的人，就如同美玉一般，經得住風吹雨打，耐得住歲月的沖刷和考驗。