"To destroy an undesirable rate of mental vibration, put into operation the Principle of Polarity and concentrate upon the opposite pole to that which you desire to suppress. Kill out the undesirable by changing its polarity."—The Kybalion.
This is one of the most important of the Hermetic Formulas. It is based upon true scientific principles. We have shown you that a mental state and its opposite were merely the two poles of one thing, and that by Mental Transmutation the polarity might be reversed. This principle is known to modern psychologists, who apply it to the breaking up of undesirable habits by bidding their students concentrate upon the opposite quality. If you are possessed of Fear, do not waste time trying to "kill out" Fear, but instead cultivate the quality of Courage, and the Fear will disappear. Some writers have expressed this idea most forcibly by using the illustration of the dark room. You do not have to shovel out or sweep out the Darkness, but by merely opening the shutters and let-
