The present is a fragile bridge between the past and the future.
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。
Software is under a constant tension. Being symbolic it is arbitrarily perfectible; but also it is arbitrarily changeable.
世界称之为不道德的书,是那些揭露世界自身羞耻的书。
任何优秀的飞行员,无论他有多么高的天赋和丰富的经验,都不会不使用检查表。