Many peoples used to believe that the moon influenced life. Philosophers and priests in ancient times taught that the moon was related to birth, growth, and death because it waxed and waned. Some people feared eclipses as signs of famine, war, or other disasters. According to one superstition, sleeping in moonlight could cause people to lose their sound mind. Crazy people may become even crazier under the influence of the moon. When people become slightly crazy, they are often said to be moonstruck, that is, under the influence of the moon. The word lunatic, which means moonstruck, comes from luna, a Latin word meaning moon. Even today, many people believe the moon affects the weather. Others think seeds grow especially well when planted during a waxing moon. The best day for a wedding is the day when the moon is full.