(Click to enlarge photo of disciples hearing from Srila Prabhupada)
"Kṛṣṇa says to Arjuna that 'I am giving you perfect knowledge.' This is our process. We receive knowledge from the perfect person. There is no use getting knowledge from imperfect person. That is useless waste of time. And who is perfect person? Who does not commit any mistake, who is never illusioned, whose senses are not imperfect and who is not a cheater. These are the qualification. These are the symptoms of perfect person. First thing is he does not commit mistake. Throughout the whole world you study big, big men, they committed mistake. Hitler committed mistake. Gandhi committed mistake. Churchill committed mistake. Because 'To err is human.' However big you may be, you cannot avoid mistake, because you are not liberated. So these are the signs of becoming perfect man: that he does not commit mistake, neither he is illusioned."
(Srila Prabhupada Lecture, Nairobi, October 28, 1975)