There is no great genius without a touch of madness.
[Nullum magnum ingenium sine mixtura dementiƦ.]
Attributed to Aristotle by Seneca the Younger in De Tranquillitate Animi [On Tranquility of Mind], sec. 17.10, and often attributed to Seneca.
Alternate translations:
- There is no great genius without a tincture of madness.
- No great genius has ever existed without some touch of madness.
- No excellent soul is exempt from a mixture of madness.


