What Is Real Self-interest? - Prabhupada 0107
721019 - Lecture SB 01.02.08 - Vrndavana
Real self-interest is to become Vaiṣṇava, servitor of Viṣṇu. Viṣṇur asya devatā iti vaiṣṇava. That is real self-interest. Why people do not become Vaiṣṇava? Generally they worship various demigods—devotee of Lord Śiva, devotee of Goddess Kali, Durgā, so many. But they have been condemned by Bhagavad-gītā, spoken by Kṛṣṇa Himself: kāmais tais tair hṛta-jñānā yajante anya-devatāḥ. Hṛta-jñānāḥ (BG 7.20).
Śrīla Viśvanātha Cakravartī Ṭhākura gives his comment, hṛta-jñānāḥ naṣṭa-buddhayaḥ: "One who has lost his intelligence, they are inclined to worship other demigods."