Quetzalcoatl is an Aztec sky and creator god. The name is a combination of quetzalli, a brightly colored Mesoamerican bird, and coatl, meaning serpent. The name was also taken on by various ancient leaders. Due to their cyclical view of time and the tendency of leaders to revise histories to support their rule, many events and attributes attributed to Quetzalcoatl are exceedingly difficult to separate from the political leaders that took this name on themselves. Quetzalcoatl is often referred to as The Feathered Serpent and was connected to the planet Venus. He was also the patron god of the Aztec priesthood, of learning and knowledge. Today Quetzalcoatl is arguably the best known Aztec deity, and is often thought to have been the principal Aztec god. However, Quetzalcoatl was one of several important gods in the Aztec pantheon along with the gods Tlaloc, Tezcatlipoca and Huitzilopochtli.