"The best way to predict the future is to create it."
预测未来的最好方法就是创造未来。
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。
Flow is being completely involved in an activity for its own sake. The ego falls away. Time flies. Every action, movement, and thought follows inevitably from the previous one, like playing jazz. Your whole being is involved, and you're using your skills to the utmost.
一个民族的活力随天气和季节而变化。