Profit is not the legitimate purpose of business. The legitimate purpose of business is to provide a product or service that people need and do it so well that it's profitable.

Never overtrade.

The universe is a self-organizing system, and consciousness is a part of that system.

The greatest crimes are not committed by people breaking the rules, but by people following the rules.

里氏替换原则是面向对象编程中的一个基本概念，它指出子类的对象应该能够替换超类的对象而不影响程序的正确性。