Paganism is a term that covers a great number of spiritual and religious beliefs, and someone who follows one of these beliefs is known as a Pagan. Some of those in ancient times, who are called "Pagans" today, believed there was not just one god but a number of gods and goddesses. The stories from Greek mythology are famous examples from a pagan religion. Pagans usually focus on spirituality and nature, rather than on doctrines and dogma. Not all pagans are polytheists (belief in more than one god). Some of them are monotheists (belief in only one god).