 Inspired by the idealistic tendencies of various sūtras consisting of important elements of the idealistic doctrines, in the third and the fourth centuries many Indian philosophers developed and systematised a coherent Idealist School. In the beginning of the Viṃśatikā Vasubandhu treats citta, manas, vijñāna, vijñāpti as synonymous and uses these terms as the names of the idealistic school. The chief founders were Maitreyanāth (ca. 300) and Asaṅga (315–390), propagated by Vasubandhu (320–380), Dignāga (480–540) Sthiramati (ca. 500), Dharmapāla (530–561), Hiuan-tsang (602–664), Dharmakīrti (600–660), Śāntarakṣita (ca.725–788) and Kamalaśīla (ca.740–795). The last two are Yogācāra-Mādhyamikas in contrast with the earlier figures who are identified as Yogācārins.