You want to hear about insanity? I was found running naked through the jungles in Mexico. At the Mexico City airport, I decided I was in the middle of a movie and walked out on the wing on takeoff. My body… my liver… okay, my brain… went. – Dennis Hopper
I doubt if a single individual could be found from the whole of mankind free from some form of insanity. The only difference is one of degree. A man who sees a gourd and takes it for his wife is called insane because this happens to very few people. – Desiderius Erasmus
Three passions, simple but overwhelming, have governed my life: the longing for love, the search for knowledge, and unbearable pity for the suffering of mankind. – Bertrand Russell, Autobiography, 1967