Prabhupada Letters :: 1968.

"The whole Srimad-Bhagavatam is full of philosophical discussions and we are prepared for that. But at the same time we are concerned mostly with the mass of people - therefore Hare Krishna kirtana is our life and soul."

Prabhupada Letters :: 1972.

"Make Krsna your husband, always think of Him, chant without fail sixteen rounds daily, read Srimad-Bhagavatam at least one hour daily, and in this way, without any doubt you will very soon become very happy."