Guru does not mean anything extraordinary. Any damn rascal like me can become guru. You cannot question, “You are a damn rascal. How you have become guru?”
(Bhagavad-gita 4.3 — February 10, 1974, Vrndavana)
You become guru. No qualification required. Simply you repeat what Krsna has said.” Just see how simplified. Don’t talk anything nonsense. Anyone can do it, even a child. [laughs] Our Syamasundara’s daughter. She was preaching, “Do you know Krsna?” They said, “No, I have got no…” This is preaching, simply if you say that “Krsna is the Supreme Personality, the supreme controller. Just be obedient to Him.” Where is the difficulty? Anyone can preach. Chant Hare Krsna. Bas. Three words: Krsna is the Supreme Personality of Godhead, surrender unto Him and chant Hare Krsna. Your life will be successful. What is the difficulty in preaching these three words? Is there any difficulty? Even a child like Sarasvati, she can preach. Then what to speak of others? Those who are educated, those who are advanced, they can put the matter more nicely, more convincingly, more philosophically. That is another thing. But these three words, that “Krsna is the Supreme Lord; you are servant; and chant Hare Krsna” — bas, preaching complete. Very simple thing and the sublime instruction. Everyone can become guru by simply teaching these three words. Not sophisticated, but he must also understand, not blindly.
(Conversation — January 26, 1977, Jagannatha Puri)