所有契约的价值，都是由契约者的欲望来衡量的。
The value of all things contracted for, is measured by the appetite of the contractors.
教学只是教育的脚手架；真正的建筑是由孩子自己完成的。
In aggregates, the closer you are to your market, the more competitive you become.
The real and effectual discipline which is exercised over a workman is that of his customers.
成功是唯一的选择，失败不是。