Profiles in skepticism: Cicero

Skepticism and the ethics of belief

Figs in Winter

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Marcus Tullius Cicero, Capitoline Museums, Rome. Photo by the Author.

Regular readers of Figs in Winter know that I’m partial to Marcus Tullius Cicero, the Roman advocate, statesman, and philosopher who contributed so much to the understanding and popularization of philosophy in the ancient world. So he couldn’t possibly be missing from this short series on ancient skepticism.

There is one aspect in particular of Cicero’s philosophy, however, that is not widely appreciated even though it is arguably of fundamental importance, just as much now as it was in Cicero’s time: his contribution to the debate about the ethics of belief.

The debate is about whether it is ethical to hold beliefs when the evidence is shaky, not available, or even when such belief seem to go against the available evidence and arguments. It deeply connects two branches of philosophy usually seen as independent: ethics and epistemology. In modern times the discussion was framed by two important essays, one by the mathematician William K. Clifford, the other by the philosopher William James.

Clifford published his paper in 1877 in the Contemporary Review with the apt title “The Ethics of Belief.” He famously argued that “It is wrong always, everywhere, and for anyone to believe anything on insufficient evidence.”

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Figs in Winter

by Massimo Pigliucci. New Stoicism and Beyond. Entirely AI free.