These regulative functions of chanting the rounds sixteen daily, rising early in the morning to attend Mangala Arati, holding classes for studying our scripture and going on Sankirtana, these items must not be neglected. They will quickly advance us in Krishna Consciousness and clear up all doubtful activities which have been causing mischief in our Society.

(From Srila Prabhupada's letter to Revatinandana — Tokyo 27 August, 1970)