Acarya means one who has received the Vedic knowledge through the parampara system. Evam parampara-praptam imam rajarsayo viduh [Bg. 4.2]. He is acarya. Acarya cannot be manufactured, self-made. No. He must come down from the disciplic succession. He is acarya. You have to approach such acarya who is coming in disciplic succession. acaryavan puruso veda. One who is under the shelter of acarya, he knows things. So Krsna recommends also here that if you actually want to become in knowledge, if you want to have real knowledge, then you must worship acarya. Acaryopasanam. This is Vedic system.
Лекция по Бхагавад-гите 13.8-12, Бомбей, 5 октября 1973