Philip Glass speaks at the World Science Festival, 2011

The blurb from their website - “When talking about geniuses, the conversation inevitably strays towards topics of eccentricity, or even madness. One needs only to look at the lives of artists such as Vincent Van Gogh and Mark Rothko, or to mathematician John Nash (pictured)—whose battle with paranoid schizophrenia was made famous in the film A Beautiful Mind—as examples of the thin line between brilliance and insanity. But is there really anything to this idea of the “tortured genius”? Or is it just a romanticized notion exaggerated by film and literature? Philip Glass and Julie Taymor respond to striking data presented by Dean Keith Simonton, a psychologist who has studied the nature of genius for decades.” 

Check out the video of their conversation here