成功交易的关键是知道何时买入和何时卖出。
The key to successful trading is to know when to buy and when to sell.
The things we admire in men, kindness and generosity, openness, honesty, understanding and feeling, are the concomitants of failure in our system. And those traits we detest, sharpness, greed, acquisitiveness, meanness, egotism and self-interest, are the traits of success.