Karl Marx's father had converted from Judaism to Christianity merely to ensure his job security, and yet he instilled in his son a belief that religion is necessary for morality. However, from a relatively young age Karl Marx criticizes the idea that a spiritual realm was needed to maintain social order. He later become convince that secularization will liberate people from mystical forms of social oppression. He outlined many of his ideas about religion in "A Contribution to the Critique of Hegel's Philosophy of Right