Based on Aristotle’s thought, nature of each things in the world weredetermined by its own purposes and all things seek to fulfil their natures bycarrying out these purposes. For him, everything real is a combination ofpotentiality and actuality. In other words, everything real is a combination ofthat which a thing may be, but is not yet be, and that which it already be,because all things change and it become other than they were, except pure formssuch as the human and divine active intellects.For Aristotle, nature is an organic system of things whose common formsmake it possible to arrange them into classes. Each species having its ownform, purpose, and mode of development in terms of which it can be defined.
Furthermore, based on Aristotle’sunderstanding of nature, which he associates with motion, in the sense that allor some natural things are in motion. Four elements which arethe earth, water, air and fire was mentioned by Aristotle as parts of thenatural world. Plants and animals, and also simple bodies, such as theelements are among the natural substances. Nature is a principle of innate motion and rest insubstances, which move or become stationary by themselves and not through anexternal cause or accidentally.
Using Aristotle method, we will use “what we know” or “think we know” and “how weknow” to seek to believe that the nature have some purposes. As example ifwe know about religion, we will seek to study about how do we know the religion,what makes we think we know the religion, and how can we accept the religiousconcepts. In Aristotle metaphysics, he developed the idea of afirst cause , which was not itself caused by anything as the ultimateexplanation of existence. By this, we can adopt this idea as a base argumentfor the nature of God and use our mind and senses to think and believe aboutthe purposes of the nature in metaphysics. Later we can argue about theexistence of the universe, who create the universe, and what was it purpose.In physics, Aristotlesaid that we can clearly see that plants also conducive to the end.
Forexample, leaves was grow to provide shade for the fruit and plants send theirroots down for the sake of nourishment. It is plain that the nature is a causethat operates for a purpose.