Srila Prabhupada's Letter to Gurukrpa, Yasodanandana, December 25, 1973:
Whatever is to be learned of the teachings of Srila Bhaktivinode Thakura can be learned from our books. There is no need whatsoever for any outside instruction.
Srila Prabhupada's Morning Walk, May 13, 1975, Perth:
Paramahamsa: Yeah, that was, the reason was because of, he didn't want the devotees going to Gaudiya Matha. But there's nothing wrong with the idea of studying the previous acaryas' books.
Prabhupada: No. Who said? That is wrong. We are following previous acaryas. I never said that.
Paramahamsa: All of your commentaries are coming from the previous acaryas.
Prabhupada: Yes.
Jayadharma: But that wouldn't mean that we should keep all the previous acaryas' books and only read them.
Prabhupada: That is already there. You first of all assimilate what you have got. You simply pile up books and do not read--what is the use?
Jayadharma: First of all we must read all your books.
Prabhupada: Yes.
Paramahamsa: Practically speaking, Srila Prabhupada, you are giving us the essence of all the previous acaryas' books in your books.
Prabhupada: Yes. Yes.
