The investor who is willing to take a loss is the one who will be successful in the long run.
永远不要停止学习;世界总是在变化。
The market is a pendulum that forever swings between unsustainable optimism (which makes stocks too expensive) and unjustified pessimism (which makes them too cheap). The intelligent investor is a realist who sells to optimists and buys from pessimists.