It is not only distributing Prabhupada’s books that will spread love of Godhead, but it is by distributing them and preaching with love. Prabhupada wanted us to kick out all other motivations. He wanted us to be free from the desire for profit, fame, and followers. He wanted us to make our hearts one with the spiritual master’s order. He wanted us to manifest symptoms of love. This behavior will change the course of the world. It will have a powerful effect on the nondevotees, because they will taste our bhakti. Whenever someone tastes love, he wants to reciprocate with it. Every living entity has a heart, and in that heart is the dormant desire to love Krishna. When we preach selflessly, with love, our preaching will reach that dormant center in each person’s heart and awaken it.
(SB 4.11.8-10 9.20.1995, Kaunas)