理解布莱克-斯科尔斯模型的关键在于认识到它是基于风险中性世界的概念,在这个世界中投资者对风险漠不关心。
Happiness is not something ready-made. It comes from your own actions.
我花很多时间学习,总的来说,我是为了取悦自己而写音乐,而不是为了大众。
We've had three big ideas at Amazon that we've stuck with for 18 years, and they're the reason we're successful: Put the customer first. Invent. And be patient.