改变是好的。改变就是进步。没有改变，一切都不会改善。

The key to successful investing is to have a clear understanding of the risks and rewards, a disciplined approach, and a long-term perspective.

Old minds are like old horses; you must exercise them if you wish to keep them in working order.

浪费是一种设计缺陷，而我们的工作就是修复它。