(Click to enlarge photo of Lord Caitanya Festival, Berkeley, 1970)
"Lord Caitanya, who preached Kṛṣṇa consciousness in the modern world, gave great stress to hearing because if the common man simply hears from authoritative sources, he can progress, especially, according to Lord Caitanya, if he hears the transcendental vibration Hare Kṛṣṇa, Hare Kṛṣṇa, Kṛṣṇa Kṛṣṇa, Hare Hare/Hare Rāma, Hare Rāma, Rāma Rāma, Hare Hare. It is stated, therefore, that all men should take advantage of hearing from realized souls and gradually become able to understand everything. The worship of the Supreme Lord will then undoubtedly take place. Lord Caitanya has said that in this age no one needs to change his position, but one should give up the endeavor to understand the Absolute Truth by speculative reasoning. One should learn to become the servant of those who are in knowledge of the Supreme Lord. If one is fortunate enough to take shelter of a pure devotee, hear from him about self-realization and follow in his footsteps, he will be gradually elevated to the position of a pure devotee. In this verse particularly the process of hearing is strongly recommended, and this is very appropriate. Although the common man is often not as capable as so-called philosophers, faithful hearing from an authoritative person will help one transcend this material existence and go back to Godhead, back to home."
(Bhagavad-gītā As It Is 13.26, Purport)