Marx sharply criticized those who tried to solve their problems philosophically or religiously, i.e., in thought, and advocated that they can only be solved by changing reality in practice so that the problem disappears. In other words, philosophy and religion had to be brought down to earth so that secular redemption could come through revolutionary practice, and not through thought or faith. As such, it was Marx who infamously wrote “the philosophers have only interpreted the world differently, what matters is to change it.” Due to their indifference to the material necessities of life, philosophy and religion could thus only...