The Yogācāra school ("Yoga practice") was a Buddhist philosophical tradition which arose in between the 2nd century CE and the 4th century CE and is associated with the philosophers Asanga and Vasubandhu and with various sutras such as the Sandhinirmocana Sutra and the Lankavatara Sutra. The central feature of Yogācāra thought is the concept of "Vijñapti-mātra", often translated as "impressions only" or "appearance only" and this has been interpreted as a form of Idealism or as a form of Phenomenology. Other names for the Yogacara school are 'Vijñanavada' (the doctrine of consciousness) and 'Cittamatra' (mind-only).