Man is entirely material. The human species will one day pass out of existence. Truth is usually understood as scientific proof. Only that which can be observed with the five senses is accepted as real or true. No objective values or morals exist.
Morals are individual preferences or socially useful behaviors.
Even social morals are subject to evolution and change. Only the spiritual dimension exists. All else is illusion, maya . Spiritual reality, Brahman , is eternal, impersonal, and unknowable. It is possible to say that everything is a part of God, or that God is in everything and everyone.