If the ordinary wage-earner worked four hours a day, there would be enough for everybody, and no unemployment — assuming a certain very moderate amount of sensible organization. This idea shocks the well-to-do, because they are convinced that the poor would not know how to use so much leisure.
Marx's father became a Christian when Marx was a little boy, and some, at least, of the dogmas he must have then accepted seem to have born fruit in his son's psychology.