Your most unhappy customers are your greatest source of learning.
浮动汇率并非解决所有经济问题的万能药,但它们可以提供一种有用的调整机制。
The joy of mathematics comes from the act of creation, not just the result.
A happy person is not a person in a certain set of circumstances, but rather a person with a certain set of attitudes.
世上只有一件事比被人议论更糟糕,那就是没有人议论你。