Edward Oakes quoting the Pope:

What Pope Benedict XVI said in Spe Salvi specifically of Karl Marx can be extended to most other atheists: “He forgot that man always remains man. He forgot man and he forgot man’s freedom. He forgot that freedom always remains also freedom for evil. . . . His real error is materialism: man, in fact, is not merely the product of economic conditions, and it is not possible to redeem him purely from the outside by creating a favorable economic environment.”