The Secret Doctrine further asserts the absolute universality of the law of periodicity. Man may relate the law to himself and to all else in the universe and thereby lighten his darkness to the extent of his powers of true deduction. In all departments of nature he may observe the ceaseless operation of the law of cause and effect and effect again becoming cause. Life is a great school in which man may vastly learn from his observations of the working of the law. The Secret Doctrine establishes as a third proposition, the fundamental identity of all Souls with the Universal Over-soul, and the obligatory pilgrimage of every Soul through the Cycle of Incarnation in accordance with Cyclic and Karmic law during the whole term.
Man moves ever onward in accordance with the law.
Though if he is unobservant his progress may be slow. The very fact that he has reached the stage of independent conscious existence proves the vast distance he has traveled since the spark which issued from the pure essence of the Over-soul must of necessity have passed through every elemental form of the phenomenal world before the man stage was reached. The brain reels at the vastness of his past experience and the duration of his journey, and yet man, the Eternal Pilgrim and the Immortal Spirit, is still piling stone upon stone, still rearing spires and altars in his search for the One Reality. And so will he continue to beat against the bars of his own making and struggle madly in the darkness, though light is at hand. He has become the Way, the Truth, and the Life.