Question: Sometimes during concentration at twilight, for instance, I hear a vibration which is like a murmur or a hum. Is that vibration from my own subtle body or is it the vibration of the earth, of the atmosphere?
Sri Chinmoy: The vibration comes from your subtle body. It does not come from outside, particularly in your case.
Sri Chinmoy, Meditation: God speaks and I listen, part 2, Sri Chinmoy Lighthouse, 1974
