Jnana Yoga
by Swami Vivekananda
“In this world of many, he who sees the One, in this ever-changing world, he who sees Him, who never changes, as the Soul of his own soul, as his own Self, he is free, he is blessed, he has reached the goal.
“…there is but One Existence and that One Existence seen through different constitutions appears either as the earth, or heaven, or hell, or gods, or ghosts, or men, or demons, or world, or all these things. But among these many, ‘He who sees that One in this ocean of death, he who sees that One Life in this floating universe, who realises that One who never changes, unto him belongs eternal peace; unto none else, unto none else.’”.
Jnana Yoga is a collection of 18 lectures by Swami Vivekananda on how to think about and ultimately realize nondual Reality.