We may not always be capable of distinguishing truth from imagination when we hear others say things like, “Oh, I see Krishna! I know Krishna! Every night, Krishna comes to my bedroom and talks to me before I go to sleep.” We may think such persons are advanced. The real test of advancement however, is what Prabhupada taught by his own example: Right up to his last breath, he remained a servant of Srila Bhaktisiddhanta Sarasvati Thakura. Until his last breath he meditated on his Guru Maharaja’s mission to give Krishna consciousness to the world. That is the example we should follow.
(Lecture SB 4.2.21, Moscow 10.27.1996)