"Marx argued that all human history was dominated by a tussle for the wealth between classes, one of which took the wealth, and used it to exploit the others. As science and technology developed, so one exploiting class was replaced by another that used the resources of society more efficiently. The necessity for exploitation, he observed, had ended with capitalism. If the working class, the masses who cooperate to produce the wealth, could seize the means of production from the capitalist class, they could put an end to exploitation forever and run society on the lines of the famous slogan: ‘From each according to his abilities, to each according to his needs.’"