The extreme limit of wisdom, that’s what the public calls madness.

Cocteau suggests that society often mislabels the farthest reaches of insight as insanity. “Wisdom” here is not mere prudence but a radical clarity that can defy convention, taste, or common sense—precisely the kind of perception artists, innovators, and visionaries may cultivate. The “public” functions as a collective judge that polices normality; what it cannot readily categorize or domesticate becomes “madness.” The line also implies a paradox: at the boundary where understanding becomes most penetrating, it may appear irrational to those who remain within ordinary frameworks. Cocteau thus critiques conformism and defends the outsider’s perspective as potentially the most lucid.