And it is very encouraging to hear that so many new devotees are coming. That is an indication of your sincerity. The more sincere you are in pushing this movement forward, so Krishna will reciprocate and send you many new devotees. Thank you very much. So give them protection and instruct them so that they may not go away. We recruit devotees with great difficulty. So they must be well-treated. New men may not always behave so nicely but we must be tolerant. To train a new man is like training a wild animal to be a pet. Just like the tiger is trained in the circus and later on they are dancing to the tune of the master. So the point being stressed is training. A preacher should always be tolerant.
From Srila Prabhupada’s letter to Gaura Hari — 9 July, 1971