《庄子·外篇·天地》
因此持守自然赋予的禀性就叫纲纪，德行形成就叫做建功济物，遵循于道就叫做修养完备，不因外物挫折节守就叫做完美无缺。
故执德之谓纪，德成之谓立，循于道之谓备，不以物挫志之谓完。
Therefore, to adhere to one's natural disposition is called order; to form virtue is called establishing meritorious deeds; to follow the Way is called cultivating oneself; to be unyielding in one's principles despite external setbacks is called perfection.