American scientist
Arnold M. Ludwig, M.D., Psychiatrist, Adjunct Professor of Psychiatry and Human Behavior at Brown University (2006-present), Past Chairman and Professor of Psychiatry, University of Kentucky, College of Medicine (1970-1979). 1970 Lester B. Hofheimer Prize Annual Award given by American Psychiatric Association for Outstanding Research on Alcoholism and LSD. 1973 Roy M. Dorcus Award, outstanding research on multiple personality. 1990 Outstanding Book Prize (Understanding the Alcoholic's Mind), by British Journal of Addiction.
From: Wikiquote (CC BY-SA 4.0)
While mental disturbances may provide individuals with an underlying sense of unease that seems necessary for sustained creative activity, these disturbances are not the only source for inner tension... chronic physical ailments may give someone a heightened sense of urgency to leave a mark on the world and achieve immortality through creative greatness.
People may choose to ignore their animal heritage by interpreting their behavior as divinely inspired, socially purposeful, or even self-serving, all of which they attribute to being human, but they masticate, fornicate, and procreate, much as chimps and do, so they should have little cause to get upset if they learn that they act like other primates when they politically agitate, debate, abdicate, placate, and administrate, too.