Having described the "physical" aspects of the Second Body, it would seem most important to examine how the… — Robert A. Monroe

The first step in making some kind of sense out of this mass of raw data was to set up standards for measurement and analysis. After several attempts, it became apparent that only a few of the typical yardsticks could be applied. Therefore, assumptions or premises were made to permit identification in the sorting process, and the conclusions brought forth are only as valid as the premises on which they are based.

The duality of existence is completely contradictory to all available scientific training and human experience. Again, the ultimate proof of such affirmation is to experience one's self in this state of being.

Throughout this writing, I have made many references to one evident fact; the only possible way for an individual to appreciate the reality of this Second Body and existence within it is to experience it himself.