可持续发展始于小步,但需要大视野。
The mind is everything; what you think, you become.
布莱克-斯科尔斯模型的美妙之处在于它将期权定价问题简化为估计几个关键参数,尤其是波动率。
The mind is a constantly adapting process.
I don't want to be a movie star. I want to be an actor.