Every challenge is an opportunity to grow.
你不會忘記那個是你最后希望的人的臉。
地球唱著Mi, Fa, Mi：你甚至可以從音節(jié)中推斷出，在我們這個家園中，苦難和饑荒占據(jù)著統(tǒng)治地位。
The right of nature... is the liberty each man hath, to use his own power, as he will himself, for the preservation of his own nature; that is to say, of his own life.
理解布萊克-斯科爾斯模型的關(guān)鍵在于認(rèn)識到它是基于風(fēng)險中性世界的概念，在這個世界中投資者對風(fēng)險漠不關(guān)心。