I hate to post on top of my own post, but I have an urgent question. I can't explain why it is urgent, but it is. If anyone has any information relevant to this question, please turn it over, honestly, without any hedging. The question: Have there been any well-known Christians, especially Catholics (like saints or popes or theologians or Doctors of the Church) who eventually went insane, á la Nietzsche at the end of his life? (I couldn't find an answer on Google.)