Chapter 1 from “The Science of Self-Realization,” a book by A.C. Bhaktivedanta Swami Prabhupada, the founder-ācārya of the International Society for Krishna Consciousness. The excerpts explain the core principles of Kṛṣṇa consciousness, which involves understanding one's eternal connection to God, known as Kṛṣṇa, and engaging in devotional service to Him. The text emphasizes that this practice can lead to liberation from the cycle of birth, death, old age, and disease and ultimately brings one back to Godhead. It highlights the importance of Vedic literature, particularly the Bhagavad-gītā, as a source of spiritual knowledge, and emphasizes that the practice of Kṛṣṇa consciousness is a science, not merely a matter of belief. The excerpts also address various topics such as reincarnation, the nature of the soul, and the significance of making relevant inquiries about the spiritual dimension of life.