God must reveal these things to us or we perish. We can't find them out from television or radio or medicine or psychology or art. We learn the truth about ourselves from the Word of God. And once our eyes are opened to the truth that God reveals, then we can see confirmations of it in virtually all the sciences and arts. But if we don't start with God's interpretation of who we are, we will be like blind people who go on developing elaborate theories to prove that there really is no such thing as vision, and that color and light and perspective are the inventions pious imaginations projecting onto reality their own dissatisfaction with the dark.
Religion is the opiate of the people.
That statement is not simply classic Marxism. It is classic American materialism. The difference is that American materialism doesn't outlaw religion, it imitates it and then uses it. That is the real meaning of Santa Clause. But the impact of the truth of the incarnation is so undeniable after 2000 years of influence, that the god of this world behind American materialism cannot oppose it outright, but simply imitates it with Santa Clause and a hundred other trappings in order to direct the religious impulses of the masses into economically profitable channels.