Allow all the forms of heaven and earth to manifest according to cosmic design. Nature needs little help in producing what has been happening since the beginning of time. Being of the earth and bound by space and time, our physical existence determines to a great extent how we are able to develop our character to interact with all of creation. It is time to get and be real.
JUST AS there is only one heaven, so too there is only one earth. In the hexagram of heaven the doubling of the trigram implies duration in time, but in the hexagram of earth the doubling connotes the solidity and extension in space by virtue of which the earth is able to carry and preserve all things that live and move upon it. The earth in its devotion carries all things, good and evil, without exception. In the same way the superior man gives to his character breadth, purity, and sustaining power, so that he is able both to support and to bear with people and things.
The symbol of heaven is the circle, and that of earth is the square. Thus squareness is a primary quality of the earth. On the other hand, movement in a straight line, as well as magnitude, is a primary quality of the Creative (1). But all square things have their origin in a straight line and in turn form solid bodies. In mathematics, when we discriminate between lines, planes and solids, we find that rectangular planes result from straight lines, and cubic magnitudes from rectangular planes. The Receptive (2) accommodates itself to the qualities of the Creative (1) and makes them its own. Thus a square develops out of a straight line and a cube out of a square. This is compliance with the laws of the Creative (1); nothing is taken away, nothing added. Therefore the Receptive (2) has no need of a special purpose of its own, nor of any effort; yet everything turns out as it should.
Nature creates all beings without erring: this is its straightness. It is calm and still: this is its foursquareness. It tolerates all creatures equally: this is its greatness. Therefore it attains what is right for all without artifice or special intentions. Man achieves the height of wisdom when all that he does is as self-evident as what nature does.
Limitations are troublesome, but they are effective. If we live economically in normal times, we are prepared for times of want. To be sparing saves us from humiliation. Limitations are also indispensable in the regulation of world conditions. In nature there are fixed limits for summer and winter, day and night, and these limits give the year its meaning. In the same way, economy, by setting fixed limits upon expenditures, acts to preserve property and prevent injury to the people.
But in limitation we must observe due measure. If a man should seek to impose galling limitations upon his own nature, it would be injurious. And if he should go too far in imposing limitations on others, they would rebel.
Therefore it is necessary to set limits even upon limitation.