Excerpt from Srila Prabhupada Lecture

Lecture on BG 1.32-35 -- London, July 25, 1973: This whole Kṛṣṇa consciousness movement may be called vairāgya-vidyā. Sarvabhauma Bhaṭṭācārya, he wrote one verse on Caitanya Mahāprabhu. He wrote one hundred verses. Out of that, two verses or four verses are available. When he composed the verses eulogizing Caitanya Mahāprabhu, and it was shown to Him, because it was self-eulogization, He immediately tore up the paper. So still, the devotees collected and got two or four verses. So one of the verses written by Sarvabhauma Bhaṭṭācārya is: vairāgya-vidyā-nija-bhakti-yogam (CC Madhya 6.254). This bhakti-yoga is vairāgya-vidyā, how to teach people to be detached from this material attraction. This is vairāgya-vidyā. In another place, in Śrīmad-Bhāgavatam, it is said, vāsudeve bhagavati bhakti-yogaḥ prayojitaḥ janayaty āśu vairāgyaṁ jñānaṁ ca yad ahaitukam (SB 1.2.7) In the human life, two things required: jñāna and vairāgya. Jñāna means that "I am not this body." This is jñāna. Not that so-called scientific knowledge, more attachment for this body. That is not... That is ajñāna. That is not jñāna. Jñāna means how to achieve the status of vairāgya. That is jñāna. Jñāna-vairāgya-yuktayā (SB 1.2.12). So the brahmacārī is taught vairāgya-vidyā. Vairāgya-vidyā-nija-bhakti-yoga-śikṣārtham ekaḥ puruṣaḥ purāṇaḥ (CC Madhya 6.254).