Karl Marx was a German philosopher who wrote the Communist Manifesto in 1848. In the manifesto, he outlined his theory of communism and six stages of history, culminating in a communist society without social classes or government. Marx believed that under capitalism, the bourgeoisie exploited the proletariat, or working class, and that this struggle between the haves and have nots would ultimately result in a proletariat revolution and transition to socialism and then communism. Communism, according to Marx, would be a classless society where people contribute according to their abilities and receive according to their needs.