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 only way to have a friend is to be one.
The world may be cruel, but it is also beautiful.
Innovation is not just about creating something new; it's about making a difference in people's lives.
世界上最成功的社会是那些能够在国家、市场和公民社会之间创造平衡的社会。