听从理性的人会迷失：理性奴役所有心智不够强大无法驾驭它的人。

The farmer is the only man in our economy who buys everything at retail, sells everything at wholesale, and pays the freight both ways.

The only true thoughts are those which do not understand themselves.

创新不仅仅是关于新想法，而是让它们发挥作用。