Simply by chanting the holy name of Lord Krishna, one can be freed from all undesirable habits. This is the means of awakening all good fortune and initiating the flow of waves of love for Krishna.
Chaitanya caritamrita Antya Lila 20.11
In this age, chanting of Hare Krishna Mantra is the prime business of the devotee, and preaching of this Hare Krishna Mantra by outdoor Sankirtana and propagation of literature is our more important business. Side by side, Deity worship is recommended, but when there is a question of accepting one of them, we shall prefer to accept chanting of Hare Krishna Mantra first.
Letter to Hamsaduta – Hamburg 5 September, 1969.
In Jagannatha Puri Chaitanya Mahaprabhu’s only occupation was holding Sankirtana at least four hours every day and distributing prasadam to the devotees.
As far as Sankirtana is concerned, that should be continued in all circumstances. Chanting of Hare Krishna, Sankirtana is our life and soul. Side by side, if possible, then you can attempt for the ISKCON restaurant and Krishna Prasadam distribution, but this I think is secondary.
Letter to Nathan baruch 1968.
Our first important business is to hold Sankirtana as many times as possible. The next important business is publication work.
Letter to Krishna Dasa – Los Angeles 28 July, 1969.
We are not much concerned about the temple because temple worship is not primary factor in this age. Primary factor is Sankirtana. But sometimes we want a center where people may gather and see, so a temple is required secondarily.
Letter to Mukunda – New Vrindaban 27 May, 1969.
Sukadeva Goswami says, this age is an ocean of faults, but there is one boon, in this age one gets the same result as was achieved in former ages through elaborate temple worship, costly sacrifices, or introspective meditation, simply by chanting the Holy Name of The Lord.
Letter to Achyutananda, 1975.
Sankirtana will always be appreciated, because it is the special blessings of Lord Caitanya Mahaprabhu on the people of this fallen age of Kali.
Letter to Achyutananda, 1975.
Everyone should be given a chance to take prasada and thus be induced to chant the holy names of Hare Krishna and also dance in ecstasy. By these three processes, although performed without knowledge or education, even even a dog went back to Godhead.
Chaitanya Caritamrta Antya Lila 1.32
The Krishna consciousness movement is based on this principle: chant the Hare Krishna mantra at every moment, as much as possible, both inside and outside of the temples, and as far as possible distribute prasada.