When all things which we gain are used for a selfish purpose, we at once become confronted with difficulties, troubles, and disappointments. That is why the same mystical science may be used as a means of attaining God, or may be abused by turning it into a way called 'black magic.' It is not that there is something special called 'black magic,' or that there is something else called 'white magic'; magic is all one and the same. It is how we use it that makes the difference. It is the use of it which makes it right or wrong, good or bad.