When the stock market is going up they think that -they increasingly think that the stock market is just the best investment, until when it starts falling, then they start retracting from that.

当股票市场上行时,越来越多的人会觉得,股票是最佳投资选择,而当股市下跌时,人们纷纷从股市中撤出

耶鲁公开课 - 金融市场课程节选