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The great Fifth Hermetic Principle--the Principle of Rhythm-embodies the truth that in everything there is manifested a measured motion; a to-and-from movement; a flow and inflow; a swing forward and backward; a pendulum-like movement; a tide-like ebb and flow; a high-tide and a low- tide; between the two-poles manifest on the physical, mental or spiritual planes. The Principle of rhythm is closely connected with the Principle of Polarity described in the preceding chapter. Rhythm manifests between the two poles established by the Principle of Polarity. This does not mean, however, that the pendulum of Rhythm swings to the extreme poles, for this rarely happens; in fact, it is difficult to establish the extreme polar opposites in the majority of cases. But the swing is ever "toward" first one pole and then the other.
There is always an action and reaction; an advance and a retreat; a rising and a sinking; manifested in all of the airs and phenomena of the Universe. Suns, worlds, men, animals, plants, minerals, forces, energy, mind and matter, yes, even Spirit, manifests this Principle. The Principle manifests in the creation and destruction of worlds; in the rise and fall of nations; in the life history of all things; and finally in the mental states of Man.

Beginning with the manifestations of Spirit--of THE ALL--it will be noticed that there is ever the Outpouring and the Indrawing; the "Outbreathing and Inbreathing of Brahm," as the Brahmans word it. Universes are created; reach their extreme low point of materiality; and then begin in their upward swing. Suns spring into being, and then their height of power being reached, the process of retrogression begins, and after aeons they become dead masses of matter, awaiting another impulse which starts again their inner energies into activity and a new solar life cycle is begun. And thus it is with all the worlds; they are born, grow and die; only to be reborn. And thus it is with all the things of shape and form; they swing from action to reaction; from birth to death; from activity to inactivity--and then back again. Thus it is with all living things; they are born, grow, and die--and then are reborn. So it is with all great movements, philosophies, creeds, fashions, governments, nations, and all else-birth, growth, maturity, decadence, death-and then new-birth. The swing of the pendulum is ever in evidence.

Night follows day; and day night. The pendulum swings from Summer to Winter, and then back again. The corpuscles, atoms, molecules, and all masses of matter, swing around the circle of their nature. There is no such thing as absolute rest, or cessation from movement, and all movement partakes of rhythm. The principle is of universal application. It may be applied to any question, or phenomena of any of the many planes of life. It may be applied to all phases of human activity. There is always the Rhythmic swing from one pole to the other. The Universal Pendulum is ever in motion. The Tides of Life flow in and out, according to Law.