The Dali Lama has told his non-Buddhist followers that his aim is not to turn them into Tibetan Buddhists, but to encourage them to take the Buddhist teachings home so they can be better Jews, Christians, etc. The Hare Krishnas, on the other hand, not only seem to fit every definition in Torah of idolatry; they also demand that their adherents give up all other religions. This I would consider avodah zarah, an alien form of worship.
— Zalman Schachter-Shalomi, Jewish with Feeling by Zalman Schachter-Shalomi, Joel Segel