最具创新性的解决方案往往来自于限制。
Optimism is a learned skill. Once you learn it, you can improve your life in every way.
曾子说:“我每天都要多次提醒自己:工作是否敬业?交友是否守信?知识是否用于实践?”
The market is efficient enough that most investors will not outperform it.