做给别人看很简单，做给自己看却很难。

Writing is the only thing that, when I do it, I don't feel I should be doing something else.

最好的角色是那些在合上书后仍长久留在你心中的人。

We use mathematics to understand the markets, not to predict them.

No testimony is sufficient to establish a miracle unless the testimony be of such a kind that its falsehood would be more miraculous than the fact which it endeavors to establish.