a law of metaphysics states one cannot develop supernatural and superhuman powers if one is not clean of mind. which means if one intends to use supernatural mental powers to harm another, he could not develop it in the first place.
as for the spiritual world, many have experienced astral travel conciously it is a good way to free yourself from the troubles of this world even for a short time. i believe the techniques of metaphysics can accelerate spiritual evolution. As a Christian I am sure our God Jesus Christ would not object to this.
PRAISE THE LORD
