Everyone has got some propensity. The art of preaching is to engage that propensity in the service of Krsna. Whatever we have got, our mind, our intelligence, our possessions, our time, our energies, let them all be used in Krsna's service. So by training people in this way, this will be the success of your preaching work.
Letter to Kirtanananda Swami, 28 January, 1973