Srila Prabhupada: “When you go, preach, talk, put your arguments, logic, to the opposing elements, and you are sometimes forced
backward, sometimes you are defeated. Sometimes in arguments it happens. So
this is... Visvanath Cakravarti Thakura has commented that a devotee, when he goes to preach and he is attacked by the opposing elements, that is also culture of bhakti, devotional service. Not that when you go to preach, don't think that "I am wasting my time. Better to sit down in a place and chant
Hare Krsna, Krsna, Krsna, Krsna." These are all nonsense. You have to preach, face the opposing elements. That is better than chanting Hare Krsna.”
That is my Guru Maharaja's policy.
dusta mana! tumi kisera vaisnava?
pratisthara tare, nirjanera ghare,
tava hari-nama kevala kaitava
["My dear mind, what kind of devotee are you? Simply for cheap adoration you sit in a solitary place and pretend to chant the Hare Krsna maha-mantra, but this is all cheating."]
Srimad-Bhagavatam 6.2.46 -- January 30, 1971, Prayaga