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 art of reading is in great part that of acquiring a better understanding of life from one's encounter with it in a book.

Don't watch the clock; do what it does. Keep going.

【译文】 孔子说：“人没有长远的考虑，必定有眼前的忧愁。”

生命的价值不在于寿命的长短，而在于我们如何利用它。