The essence of the materialist doctrine in philosophy asserts that matter is the only thing that truly exists. As a consequence of this assertion, it is believed that all objects in the world are comprised of material substances and that, since matter is the only substance existing, each and every phenomenon is the direct or indirect product of the interactions between these material substances.
Since this theory proposes that all that there is are matter, it inevitably stands against the precepts of dualism, negating the idea that there exists the mind which is devoid of any corporeal substance and that the perceived corporeal entity—the brain—is entirely different from the mind. However, such a grand claim of materialism has been subject to opposition in more recent times as science has proclaimed the existence of things that are non-material in nature such as energy and force.
Moreover, even the attempts of materialists to include energy and force as a form of matter or one that has material substance in it has been subject to criticism in the sense that there arises the poor and loose definition of the concept of matter being put forward by materialists. For the most part, it is then perceived that there lingers the conception of the mind as an entity that is separate from the corporeal substance and that it is far different from the scientific conception of the brain and the chemical processes attached to it.
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