Cicero on Honest Gain — The Duties of Commerce
Cicero held that profit must never be divorced from honesty, teaching in On Duties that what is morally right and what is truly advantageous can never genuinely conflict.
In De Officiis, Cicero examined the marketplace closely and argued that fraud, concealment of defects, and exploiting another's ignorance, though they may seem profitable, are never truly advantageous because they corrode the honesty on which all enduring prosperity depends. He insisted that the seeming clash between the honorable and the useful is an illusion, since deceit ultimately undermines trust, reputation, and the social bonds that make commerce possible. Large-scale enterprise, he noted, when conducted honestly, is not to be disparaged but honored as a service that supplies many. This vision of trade grounded in good faith anticipates modern institutional economics, which shows that low-trust, high-fraud environments raise costs and stifle growth while honest dealing lowers friction and enables prosperity. Cicero thus teaches that the most advantageous policy, rightly understood, is always the honest one.
Nothing that is dishonorable can ever be expedient, even when you can attain it without anyone being aware.
Institutional economics confirms Cicero's claim that honesty is advantageous: high-trust, low-fraud environments reduce transaction costs and enable the growth that deceit ultimately undermines.
De Officiis
Written about in
- What the prosperity traditions say about truth and lying
Cicero closes the escape route. His argument is not that you will be caught but that nothing dishonourable is ever genuinely expedient, even when no one is aware — the honourable and the advantageous, he insists, cannot actually come apart.