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。
The degree of slowness is directly proportional to the intensity of memory. The degree of speed is directly proportional to the intensity of forgetting.
The world is a series of broken dams and floods, and my cartoons are tiny little lifeboats.
Life is too short to waste time on people who don't respect you.