"One of the most poetical of the Upanishads, the Katha Upanishad, begins with the inquiry: "When a man dies, there is a dispute. One party declares that he has gone forever, the other insists that he is still living. Which is true?" Various answers have been given. The whole sphere of metaphysics, philosophy, and religion is really filled with various answers to this question. At the same time, attempts have been made to suppress it, to put a stop to the unrest of mind which asks, "What is beyond? What is real?" But so long as death remains, all these attempts at suppression will always prove to be unsuccessful."

- Swami Vivekananda, "The Real Nature of Man" (The Real and The Apparent Man, June 21, 1896, Royal Institute of Painters, London), Jnana Yoga, Complete Works: Vol 2