It is very much encouraging to me to hear of so many activities of performing kirtana there. Kirtana is the universal principle, therefore, if you chant Hare Krishna offenselessly, that is to say, avoiding the 10 kinds of offenses, the vibration is sure to act. And anywhere this vibration is made, it will be liked because it is done on the spiritual platform. And on the spiritual platform, there will be certainly agreement. So long one is on the material platform, there is no agreement. So our movement is directly taken to the spiritual platform. So do it nicely, offenselessly, and it will be successful anywhere.

From Srila Prabhupada’s letter to Gurudasa — Los Angeles 14 December, 1968