Materialistic Naturalism asserts that matter is the only reality, and that all the laws of the universe are reducible to mechanical laws. It is a philisophical point of view. It asserts that we call the human person is but a transitory phase in the special arrangement of material elements giving rise to special mental results; and it goes without saying that in such a system there is no room for freedom, responsibility, or personal immortality. It is generally completely incompatible with religious belief systems and OUGHT NOT BE INSTRUCTED IN PUBLIC SCHOOLS.
"Materialistic Naturalism asserts that matter is the only reality, and that all the laws of the universe are reducible to mechanical laws."
The position of science is called methodological naturalism.