Why Karl Marx believe that capitalism would fail

Why did Karl Marx believe that capitalism would fail?
Marx holds that capitalism is doomed to collapse due to its own self-destructive tendencies. Lay out his arguments here: What did he get right and wrong, in your view? While this paper should focus on Marx, use one of the following thinkers - Rawls, Nozick, or Goldman - to provide a counterpoint to some aspect of Marx's views on either capitalism or how to overcome it.