books.google.fr - German philosopher and anthropologist LUDWIG ANDREAS VON FEUERBACH (1804-1872) was a powerful influence on Karl Marx and Friedrich Engels. Feuerbach's atheism is reflected in their socialist philosophies, and that humanized theology-essentially, a rational approach to understanding concepts of God and...http://books.google.fr/books/about/The_Essence_of_Christianity.html?hl=fr&id=0q9QgFoJp34C&q=absolute&utm_source=gb-gplus-shareThe Essence of Christianity