"In this universe there is one continuous substance on every plane of existence. Physically this universe is one: there is no difference between the sun and you. The scientist will tell you it is only a fiction to say the contrary. There is no real difference between the table and me; the table is one point in the mass of matter, and I another point. Each form represents, as it were, one whirlpool in the infinite ocean of matter, of which not one is constant. Just as in a rushing stream there may be millions of whirlpools, the water in each of which is different every moment, turning round and round for a few seconds, and then passing out, replaced by a fresh quantity, so the whole universe is one constantly changing mass of matter, in which all forms of existence are so many whirlpools. A mass of matter enters into one whirlpool, say a human body, stays there for a period, becomes changed, and goes out into another, say an animal body this time, from which again after a few years, it enters into another whirlpool, called a lump of mineral. It is a constant change. Not one body is constant. There is no such thing as my body, or your body, except in words. Of the one huge mass of matter, one point is called a moon, another a sun, another a man, another the earth, another a plant, another a mineral. Not one is constant, but everything is changing, matter eternally concreting and disintegrating. So it is with the mind."

- Swami Vivekananda, "Prana" (Beginning raja yoga class, Dec 21, 1895, New York Vedanta Society), Raja Yoga, Complete Works: Vol 1