The Smarta tradition is aligned with Advaita Vedanta, and regards Adi Shankara as its founder or reformer. The advaita sampradaya is not a Shaiva sect, despite the historical links with Shaivism: Advaitins are non-sectarian, and they advocate worship of Shiva and Vishnu equally with that of the other deities of Hinduism, like Sakti, Ganapati and others. Shankara championed that the ultimate reality is impersonal and Nirguna (attributeless) and that any symbolic god serves the same equivalent purpose. Inspired by this belief, the Smarta tradition followers, along with the five Hindu gods include a sixth impersonal god in their practice. The tradition has been called by William Jackson as advaitin, monistic in its outlook.