Well, love is insanity. The ancient Greeks knew that. It is the taking over of a rational and lucid mind by delusion and self-destruction. You lose yourself, you have no power over yourself, you can't even think straight. ↗
Quentin Tarantino is controlled insanity, I would say. He's very loud and fun. I don't think there's anybody on the planet like him that I have ever met. ↗
I would say any behavior that is not the status quo is interpreted as insanity, when, in fact, it might actually be enlightenment. Insanity is sorta in the eye of the beholder. ↗