The most important ability of a product manager is to turn yourself into a fool.

The human body is the most complex puzzle, and medicine is our way of solving it.

The truth is rarely pure and never simple.

To this day, I have never taken a course anywhere, in chemistry, economics, psychology, or business.

解读：绝对的自由会让拥有更多资源、权力的强者肆意妄为，他们会凭借优势去压榨弱势群体，抢占利益。所以，用道德、法律来框定自由边界，是守护社会公平、保障弱者权益的必需。

定理是数学的里程碑。