In its deepest essence, the human soul is identical with the immortal Brahman that sustains the entire universe. Bhagavad Gita says that "those who know the soul, are immortal."
*I shall tell you of the soul. The soul is God who is immortal and infinite, who has no beginning and will have no end, and who both exists and does not exist. Those who know the soul, are immortal.* *The soul dwells in every living being, and in every part of every living being; it dwells in the hand and the foot, the skull and the mouth, the eye and the ear. Although it does not itself have senses, it shines through every sense. It is completely independent, yet all beings depend on it.* *The soul is both near every living being, and far from every being. The soul is both inside and outside every living being. The soul is the cause of movement, but does not itself move. The soul is one, yet has innumerable forms. The soul creates, preserves, and destroys.* *The soul is the light of every light; and its light transcends the duality of brightness and darkness. The soul is the light of knowledge; and its light is also the goal of knowledge. In the soul the subject and object of knowledge are one.* *Bhagavad Gita 13.12-17*
