质量不是奢侈品；它是必需品。

Profit is not the legitimate purpose of business. The legitimate purpose of business is to provide a product or service that people need and do it so well that it's profitable.

遇宠辱而不惊则肝自宁，或动或静只要慎重则心自静，饮食有所节制则脾自安，调节呼吸少言语则肺自保全，淡泊少欲则肾气自足。