The word lunatic comes from its Latin origins lunaticus which meant either “moonstruck” or “of the moon”. The term was first used to refer to those who had epilepsy and madness since they were thought to be caused by the moon, and to describe the mentally ill as dangerous (which was irrational, and will be another post’s topic). Then, astrologers used the term to mention neurological and psychological diseases. It is also known that Aristotle and some other philosophers whom I can’t name right now, thought that full moon and its light were connected to bipolar disorders. The light caused by full moon was seen as the main cause for people’s sleep deprivations.