P与NP问题是计算机科学中最重要的一个问题之一。
For the past 33 years, I have looked in the mirror every morning and asked myself: 'If today were the last day of my life, would I want to do what I am about to do today?' And whenever the answer has been 'No' for too many days in a row, I know I need to change something.
市场保持非理性的时间可能比你保持偿付能力的时间更长。
An artist must be willing to fail.