Do not hesitate to use your American and European brains to increase, that is Krishna’s special gift to you, now use it. Any activity which will please Krishna should be accepted favorably, this is our guiding principle. Now apply it in this way, by doing everything and anything for spreading this Krishna Conscious literature, and this is really pleasing to Krishna, know it for certain.

From Srila Prabhupada’s letter to Kirtiraja, 27 November, 1971