John Lennon: We still have to keep sifting through like sand to see whose got the best matter, or...
Prabhupāda: Try to understand this, that regarding authority, you say that how to find out the authority. To answer this question, Kṛṣṇa is authority. There is no doubt. Because if Kṛṣṇa is an authority, Maharsi takes also Kṛṣṇa's book and Aurobindo takes Kṛṣṇa's book, Vivekananda takes Kṛṣṇa's book, Dr. Radhakrishnan takes Kṛṣṇa's book. So Kṛṣṇa is authority. Śaṅkarācārya also takes Kṛṣṇa's book. You know Śaṅkarācārya's commentary on Kṛṣṇa? And in that commentary he accepts, kṛṣṇas tu bhagavān svayam (SB 1.3.28), sa bhagavān svayam kṛṣṇaḥ: "Kṛṣṇa is the Supreme Personality of Godhead." He accepts. You say that Maharsi accepts Śaṅkarācārya. Śaṅkarācārya accepts Kṛṣṇa as the Supreme Personality of Godhead.