Jon Mills states that monism and reductionism contradict the idea of ​​free will and the self. The materialist view is based on the concept of simplicity which is: if something cannot be measured, it does not exist or is not real. If no physical system is free, then human beings, being physical, are not free, so the property of free will is verified. Materialism is an atheistic concept and also denies the existence of the soul and the ontology of consciousness. (2002, Jon Mills) Mills explains the errors in materialist concepts. Materialism ultimately simplifies everything into matter or things that are empirically valid while things apart are not real. Materialism is ambiguous because it excludes the possibility of free will and the mind, leaving the human being as a physical object and nothing