We are the best peaceful group in the world and we are trying to bestow upon the people the supermost knowledge for the humanity. Everyone should cooperate with us, but unfortunately this is the age of Kali and people are not very much eager to accept genuine things, so don't be disappointed. Do as you are doing now and Krsna will help you without fail. To face difficulty in the course of preaching work is a kind of austerity. These difficulties do not go in vain.
Letter to Upendra, 22 April, 1970