“If we want to strengthen the Central Plains to resist foreign barbarians, we can only use loyalty to appeal to the patriotism of the world, and use the majesty of the court to unite the power of the world. This is a natural principle and has remained unchanged at all times and in all countries. Principles... what cannot be changed are only ethics and Taoism, not laws, (it is) the teachings of saints, not machinery, (it is) the skills of the heart, not craftsmanship."