One of the four sons of Ometecuhtli, Quetzalcoatl reigns of the West, acting as a god of Light, Mercy, and wind. He and his brother Tezcatlipoca created humanity by sacrificing Cipactli, the earthmonster. As patron god of knowledge and learning, of Aztec priesthood, he invented books and the calendar. Being god of life & fertility as well, he gave maize to his people so that they may flourish and prosper. It is mistakenly thought that the Aztecs believed Hernan Cortes to be Quetzalcoatl; in fact, the myth was propagated by the Spanish after the bloody conquest of the indigenous people.