To arrive at understanding from being one's true self is called nature, and to arrive at being one's true self from understanding is called culture. … - Zisi

What is God-given is what we call human nature. To fulfil the law of our human nature is what we call the moral law. The cultivation of the moral law is what we call culture.

Therefore the moral man, even when he is not doing anything, is serious; and, even when he does not speak, is truthful.

Nature is vast, deep, high, intelligent, infinite and eternal. The heaven appearing before us is only this bright, shining mass; but in its immeasurable extent, the sun, the moon, stars and constellations are suspended in it, and all things are embraced under it. The earth, appearing before us, is but a handful of soil; but in all its breadth and depth, it sustains mighty mountains without feeling their weight; rivers and seas dash against it without causing it to leak. The mountain appearing before us is only a mass of rock; but in all the vastness of its size, grass and vegetation grow upon it, birds and beasts dwell on it, and treasures of precious minerals are found in it. The water appearing before us is but a ladleful of liquid; but in all its unfathomable depths, the largest crustaceans, dragons, fishes, and turtles are produced in them, and all useful products abound in them.
In the Book of Songs it is said: "The ordinance of God, / How inscrutable it is and goes on for ever." That is to say, this is the essence of God.