An ardent believer in the Marxist school of thought, Jean-Paul Sartre touted money as the one factor that restricts a person’s freedom. The need of money, he reasoned, is the excuse people give themselves when they shut down the idea of exploring unconventional life choices. Society’s acquiescence of money infuriated Sartre and capitalism was the political system he blamed for the phenomenon. He likened capitalism to a machine that traps people in a cycle of working in jobs they don’t like so that they can buy things they don’t need. This necessity of material things, he argued, did not exist in reality but rather was a man-made construct that led people to deny their freedom and consider living in other ways as foolhardy.
https://yourstory.com/2017/06/jean-paul-sartre-philosophy-existentialism-freedom/amp
Know Thyself 