A forest managed with care is a forest that lasts.
用心管理的森林才能长久存在。
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几个可观察的变量。
Fiction is not an escape from reality but a deeper immersion into it.
Most people are afraid of change,but if you look at it as something you can count on,then it can be a comfort.There's not many things you can really count on.