Paramadvaiti Swami: Srila Bhaktivedanta Swami Prabhupada was a preacher. He would give everything for preaching. He would tell us that preaching was his life. When he received news about preaching somewhere in the world, he would say, “This keeps me alive.”
This keeps me alive
Reference: Sato – Vrtteh by B. A. Paramadvait Swami