Hypnos Hypnos In Greek mythology, Hypnos (; , "sleep") is the personification of sleep; the Roman equivalent is known as Somnus. In the Greek mythology, Hypnos is the son of Nyx ("The Night") and Erebus ("The Darkness"). His brother is Thanatos ("Death"). Both siblings live in the underworld ("Hades") or in Erebus, another valley of the Greek underworld. According to rumors, Hypnos lived in a big cave, which the river Lethe ("Forgetfulness") comes from and where night and day meet. His bed is made of ebony, on the entrance of the cave grow a number of poppies and other hypnotic plants.
Greek mythology in popular culture of the god of medicine, Asclepius. Today's medical professionals hold a similarly honored position as did the healer-priests of Asclepius. The American colonial revolutionary, Thomas Greenleaf, subtitled his newspaper ""The Argus"" after the mythological watchman and took the slogan "We Guard the Rights of Man." The Pegasus appears frequently on stamps, particularly for air mail. In 1906, Greece issued a series of stamps featuring the stories from Hercules' life. Australia commemorated the laying of an underwater cable linking it to the island of Tasmania through a stamp featuring an image of Amphitrite. The United States military has used Greek mythology