理解布莱克-斯科尔斯模型的关键在于认识到它是基于对冲以消除风险的理念。
I cannot but be astonished that Socrates， after having so often repeated to his fellow citizens that he did not pretend to any wisdom， but had been appointed by the gods to a mission of benevolence towards them， should have been condemned to death.
Life is not measured by the number of breaths we take, but by the moments that take our breath away.
生命的价值不在于我们呼吸的次数，而在于那些让我们屏息的时刻。
宇宙的知识就在我们体内。
人们说苦难喜欢陪伴，但我认为自由也是如此。
A vaincre sans peril, on triomphe sans gloire.
"A great book is a friend that never lets you down."