Philosophies about finance

According to Friedrich Engels and Kark Marx, money was merely an instrument of capitalist exploitation, replacing all human relationships, even those within the family, with the callous ‘cash nexus’. In ‘Capital’, Marx sought to demonstrate that, money was commoditized labor, the surplus generated by honest toil, appropriated and then ‘reified’ in order to satisfy the capitalist class’s insatiable lust for accumulation.

What is Milton Friedman’s main point?