'The Law Of Vibration'

The Law of Vibration is the law of progress, of movement and of rotation. On the seventh or lowest plane, the vibration is slow, clogged and lethargic from the standpoint of the first, and it is in learning to vibrate or to rotate more rapidly, that we mount the path of return. It involves, therefore necessarily, the building in of finer matter into the vehicles, both deva and human. In this second system, on the five planes of human evolution, we have the five vehicles - physical, astral, mental, buddhic and atmic - which have all to be purified, rarefied, intensified and refined. (Alice A Bailey - A Treatise On Cosmic Fire)