The cheating propensity pervades material existence
Every man has a cheating propensity, which is employed in business or money transactions. Although two friends may be living peacefully together, due to their propensity to cheat they become enemies when there is a transaction between them. A philosopher accuses an economist of being a cheater, and an economist may accuse a philosopher of being a cheater when he comes in contact with money. In any case, this is the condition of material life. One may profess a high philosophy, but when one is in need of money, he becomes a cheater.
Srimad Bhagavatam 5.14.26 purport