All Vaishnava schools are panentheistic and perceive the Advaita concept of identification of Atman with the impersonal Brahman as an intermediate step of self-realization, but not Mukti, or final liberation of complete God-realization through Bhakti Yoga. Gaudiya Vaishnavism, a form of Achintya Bheda Abheda philosophy, also concludes that Brahman is the Supreme Personality of Godhead. According to them, Brahman is Lord Vishnu/Krishna; the universe and all other manifestations of the Supreme are extensions of Him.