在数学中，就像在生活中一样，最优雅的解决方案往往来自于对问题的深刻理解。
In mathematics, as in life, the most elegant solutions often arise from a deep understanding of the problem.
Buying tools: Start by buying the absolute cheapest tools you can find. Upgrade the ones you use a lot. If you wind up using some tool for a job， buy the very best you can afford.
Leadership is not about being in charge, it's about taking care of those in your charge.
The desire for recognition, the thymotic part of the soul, is what drives human history.