I have your letter which I received during my last visit to Moscow, and I have noted the contents with pleasure. This pleasure was aroused from reading that both of you are now serving Srila Prabhupada's mission, by assisting the devotees in Moscow with the many responsible tasks that lie on their shoulders. I'm very anxious to see that the devotees living outside the temple do not simply remain as “guests”, who visit the temple whenever there is a visiting sannyasi. Of course, in the beginning, that is understandable. But the more that one hears about Krishna, the more one's desire to serve Him should become aroused.
Collected Letters: Volume 2