互联网是教育的强大工具，但它不能替代教师。

The American farmer is the only man in our economy who has to buy everything he buys at retail, sell everything he sells at wholesale, and pay the freight both ways.

Your most unhappy customers are your greatest source of learning.

唯一的正义就是遵循灵魂真诚的直觉，无论是愤怒还是温柔。