Some of you, perhaps, know this to be true. All this bringing of the mind into a higher state of vibration is included in one word in Yoga — Samadhi. All these states of higher vibration, superconscious vibrations of the mind, are grouped in that one word, Samadhi, and the lower states of Samadhi give us visions of these beings. The highest grade of Samadhi is when we see the real thing, when we see the material out of which the whole of these grades of beings are composed, and that one lump of clay being known, we know all the clay in the universe.