Gardnerian Wicca that Aleister Crowley played a crucial role in inspiring Gardner to establish a new pagan religion. Ruickbie, Hutton, and others further argue that much of what has been published of Gardnerian Wicca, as Gardner's practice came to be known, was written by Blake, Yeats, Valiente and Crowley and contains borrowings from other identifiable sources. The witches Gardner was originally introduced to were originally referred to by him as "the Wica" and he would often use the term "Witch Cult" to describe the religion. Other terms used, included "Witchcraft" or "the Old Religion." Later publications standardised the spelling to "Wicca" and
Wicca oral teachings passed along to their initiates. There are many variations on the core structure, and the religion grows and evolves over time. It is divided into a number of diverse lineages, sects and denominations, referred to as "traditions", each with its own organisational structure and level of centralisation. Due to its decentralized nature, there is some disagreement over what actually constitutes Wicca. Some traditions, collectively referred to as British Traditional Wicca, strictly follow the initiatory lineage of Gardner and consider the term "Wicca" to apply only to similar traditions, but not to newer, eclectic traditions. Wicca is typically duotheistic,