Nath theology integrated philosophy from Advaita Vedanta and Buddhism traditions. Their unconventional ways challenged all orthodox premises, exploring dark and shunned practices of society as a means to understanding theology and gaining inner powers. The tradition traces itself to 9th or 10th century Matsyendranath and to ideas and organization developed by Gorakshanath. They combined both theistic practices such as worshipping goddesses and their historic Gurus in temples, as well monistic goals of achieving liberation or "jivan-mukti" while alive, by reaching the perfect ("siddha") state of realizing oneness of self and everything with Shiva.