真正的挑战不是种得更多，而是用更少的资源种得更好。
Science is not just about finding answers, but also about asking the right questions.
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.