This sankirtana or street chanting must go on, it is our most important program. Lord Caitanya's movement means the sankirtana movement. You may simply take two hours for chanting sixteen rounds daily, two hours for reading congregationally, and balance of time go out for sankirtana. We must do both, reading books and distributing books, but distributing books is the main propaganda. Reading in class for two hours is sufficient and other reading can be done in spare time if one has got it, it is not that one has to be always reading. One hour a morning for Bhagavata class and one hour evening, either Bhagavad-gita or Nectar of Devotion, that is sufficient.

From a letter by Srila Prabhupada to Bali Mardan, Pusta Krishna; 18 September, 1972.