In every age men have tried to asemble all then knowledge and experience of their day into a single whole which would explain their relation to the universe and their possibilities in it. In the ordinary way they could never succeed. For the unity of things is not realisable by the ordinary mind, in an ordinary state of consciousness. The ordinary mind, refracted by the countless and contradictory promptings of different sides of human nature, must reflect the world as manifold and confused as is man himself. A unity, a pattern, an all-embracing meaning – if it exists – could only be discerned or experienced by a different kind of mind, in a different state of consciousness. It would only be realisable by a mind which had itself become unified.
Rodney Collin in The Theory of Celestial Influence