Naturalism is also termed a materialism. According to this philosophy, the basis of the world is matter. Mind is also a form of matter or an element of matter or a synthesis of both. Naturalistic philosophy defines life in terms of material and chemical laws and emphasises the relation between power,speed and matter as of the nature of casual relationship.
According to Naturalism, only Nature is everything. Nothing is before and beyond it. Hence, man should investigate the truth of Nature by scientific methods with all his capacities and resources. It may be noted that Naturalists do not believe in spiritual development. They deny the existence of any such things as the supremacy of God, immortality of soul and the freedom of will.
“Naturalism is a doctrine which separates nature from God, subordinates spirit to matter and sets up unchangeable laws as supreme.” – Ward
“Naturalism is a system whose silent characteristics is the exclusion of whatever is spiritual or indeed whatever is transcendental of experience – from our philosophy of Nature and Man.” – Joyce
“All things are good as they come from the hands of the author of Nature, every where they degenerate in the hands of man.” – Rousseau