Many followers of Thelema learn and use other systems of spiritual thought, blending them according to their own will with Thelema. Most borrow freely from other traditions. For example, Nu and Had are thought to be the same as or similar to the Tao and Teh of Taoism, Shakti and Shiva of the Hindu Tantras, Shunyata and Bodhicitta of Buddhism, Ain Soph and Kether in the Qabalah. Like Crowley, other followers of Thelema make free use of the methods and practices of other traditions, including alchemy, astrology, qabalah, tantra, tarot, and yoga, according to their own wills.