Creativity of all sorts seems bound up with mental illness, or perhaps more gently put, a psyche out of balance…

… it is also a common observation – which means, naturally, that while quite probably right, it will prove a test of ingenuity for some kinds of psychologist to ‘prove’ it wrong – that there is a high rate of mental illness in comedians.

McGilchrist, Iain . The Matter With Things: Our Brains, Our Delusions and the Unmaking of the World (p. 448). Perspectiva Press. Kindle Edition.