"This human form of body is a most valuable boat, and the spiritual master is the captain, guru-karnadharam, to guide the boat in plying across the ocean of nescience. The instruction of Krishna is a favorable breeze. One must use all these facilities to cross over the ocean of nescience. Since the spiritual master is the captain, one must serve the spiritual master very sincerely so that by his mercy one will be able to get the mercy of the Supreme Lord."
(Srimad-Bhagavatam 7.15.45, Purport)
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