Taoism (also spelled Daoism) is a religion and a philosophy from ancient China that has influenced folk and national belief. Taoism has been connected to the philosopher Lao Tzu, who around 500 B.C.E. wrote the main book of Taoism, the Tao Te Ching. Taoism holds that humans and animals should live in balance with the Tao, or the universe. Taoists believe in spiritual immortality, where the spirit of the body joins the universe after death.