The best way to buy a stock is when it's cheap, and the best time to sell is when it's expensive.
理解复杂系统的行为需要一种新的思维方式,一种接受不确定性和不可预测性的思维方式。
衡量矿业公司成功的真正标准不仅在于其财务报表,还在于它对社区留下的持久积极影响。
The existing is already a resource.