The idea that a bell rings to signal when investors should get into or out of the stock market is simply not credible.

世界越是混乱，我们越需要建筑来理解它。

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.

如果你不愿意学习，没人能帮你。如果你决心学习，没人能阻止你。