"The Essence of Religion" is a philosophical work published in 1841 that critiques the nature and origins of religious belief, arguing for a Darwinian-historical origin for religion, and a materialistic worldview. In this work, Feuerbach argues that religion is a product of human imagination and projection, and that its true essence can only be understood by examining the human mind and its relationship to the natural world. Schopenhauer and Nietzsche both take their satirical criticism about religion from Feuerbach, and every aspect of Marxism can be found here in Marx's favorite Philosopher. Feuerbach is a critical figure in the development of not merely Marxism, but Materialistic Humanism in general. Feuerbach is critical to understanding Marx. This is Volume VI in the The Complete Works of Ludwig Feuerbach by LP