The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
我和其他積累了這種財(cái)富的人之間的主要區(qū)別在于，我主要對(duì)思想感興趣，而不是賺錢(qián)。
"In the midst of winter, I found there was, within me, an invincible summer."