ATTRIBUTED
No great mind has ever existed without a touch of madness.
Attributed
Widely credited, but not traced to a source.
This quote is widely credited to the author across popular collections, but we haven't traced it to a primary published source. The attribution is plausible, but unconfirmed — cite it with care.
Source
Seneca, *De Tranquillitate Animi* (On Tranquility of Mind), section 17.10 — "Nullum magnum ingenium sine mixtura dementiae fuit"
Editorial Note
The exact sentence appears only in Seneca's De Tranquillitate Animi 17.10 (c. AD 60), where Seneca writes "nullum magnum ingenium sine mixtura dementiae fuit" and credits the thought to Aristotle. No surviving work of Aristotle contains it; the closest parallel is Problemata XXX.1, on why men of genius tend toward melancholy — a work whose Aristotelian authorship is itself disputed. The popular attribution to Aristotle therefore rests entirely on Seneca's second-hand report. Unlike modern misattributions, this one carries genuine weight — Seneca had access to Aristotelian texts now lost — but since the wording is verifiable only as Seneca's Latin, we classify the attribution to Aristotle as attributed rather than verified. This same quote also appears in our database under Seneca, where it is verified: the sentence as written is his.
