道德规则不是我们理性的结论。
The rules of morality are not the conclusion of our reason.
I write to understand, to grasp, to seize the reality that escapes me.
I don't design buildings, I design relationships between spaces and people.
量化金融最重要的教训是，你必须理解模型的局限性。
一个字接一个字就是力量。