...how to defeat theritvik idea and the answer is that, because there is no example of a ritvik acarya ever in the whole history of existence in this universe. And there are hundreds of stories in theSrimad-Bhagavatam of guru disciple, guru disciple. In the C.c. there wasn't even ritvikwhat to speak of Srila Prabhupada, Caitanya Mahaprabhu was present but the people weren't ritviking for Him. There is no example of a ritvik ever. There is only the example of parampara. In the Nectar of Devotion, Chapter Seven, which is a summary study of Bhakti-rasamrita-sindhu, you have to look it up, Srila Prabhupada talks about sannyasis.There he says that the sannyasi will always accept any sincere disciple. That is one of the direct references. C.c. Adi-lila 1. The truth of guru-tattva is described. It describes the parampara, the disciplic succession. Without being initiated by a bonafide spiritual master...it doesn't say without being initiated by a ritvik of a bonafide spiritual master although he has left the world. It says without being initiated by a bonafide spiritual master one cannot go back to Godhead. And also in there it says, first one generally takes siksa, then the siksa-guru then gives diksa. So there is no example of a ritvikanywhere except sometimes during the living presence of the spiritual master a ritvikacts as a priest because he can't be present. That is quite common.