The key to successful investing is to control what you can control: costs, taxes, and behavior.
成功投资的关键是控制你能控制的：成本、税收和行为。
世界是一个残酷的地方，艺术是它的复仇。
The most important single central fact about a free market is that no exchange takes place unless both parties benefit.
The Langlands correspondence is not just a theorem but a guiding principle for future discoveries.