The personal ego of man forms itself out of the impersonal life of the universe like a wave forming itself out of the ocean. It constricts, confines, restricts, and limits that infinite life to a small finite area. The wave does just the same to the water of the ocean. The ego shuts out so much of the power and intelligence contained in the universal being that it seems to belong to an entirely different and utterly inferior order of existence. The wave, too, since it forms itself only on the surface of the water gives no indication in its tiny stature of the tremendous depth and breadth and volume of water beneath it.
Consider that no wave exists by itself or for itself, that all waves are inescapably parts of the visible ocean. In the same way, no individual life can separate itself from the All-Life but is always a part of it in some way or other. Yet the idea of separateness is held by millions. This idea is an illusion. From it springs their direct troubles. The work of the quest is simply this: to free the ego from its self-imposed limitations, to let the wave of conscious being subside and straighten itself out into the waters whence it came. The little wave is thus reconverted into the infinite Overself.
-- Notebooks Category 8: The Ego > Chapter 1 : What Am I? > # 102
