When we look upon the world of existence, we realize that all material things have a common bond; and yet, on the other hand, there are certain points of distinction between them. For instance, all earthly objects have common bodily ties. The minerals, vegetables and animals have elemental bodies in common with each other. Likewise, they have place in the order of creation. This is the common tie or point of contact between them. All of them pass through the process of composition and decomposition; this is a natural law to which all are subject. This law is ruling throughout creation and constitutes a bond of connection among created things. But at the same time there are certain distinguishing features between these objects. For instance, between the mineral and vegetable, the vegetable and animal, the animal and human, points of distinction exist which are unmistakable and significant. Likewise, there are distinctions between kinds and species of each kingdom. When we consider the mineral kingdom in detail, we observe not only points of similarity between objects but points of distinction as well. Some are immovable bodies, some hard and solid; some have the power of expansion and contraction; some are liquid, some gaseous; some have weight; others, like fire and electricity, have not. So there are many points of distinction among these kinds of elements.

In the vegetable kingdom also we observe distinction between the various sorts and species of organisms. Each has its own form, color and fragrance. In the animal kingdom the same law rules as many distinctions in form, color and function are noticeable. It is the same in the human kingdom. From the standpoint of color there are white, black, yellow and red people. From the standpoint of physiognomy