The ultimately most profitable investment actions are by definition contrarian: you're buying when everyone else is selling (and the price is thus low) or you're selling when everyone else is buying (and price is high).

最终最赚钱的投资行为，本质上都是逆向的：你在别人都在卖出时买入（因此价格低），或者在别人都在买入时卖出（因此价格高）。

——霍华德马克思