“Enq: But this is medieval belief in witchcraft and sorcery! Even Law itself has ceased to believe in such things?
Theo: So much the worse for law, as it has been led, through such a lack of discrimination, into committing more than one judiciary mistake and crime. It is the term alone that frightens you with its “superstitious” ring in it.
Would not law punish an abuse of hypnotic powers, as I just mentioned? Nay, it has so punished it already in France and Germany; yet it would indignantly deny that it applied punishment to a crime of evident sorcery.
You cannot believe in the efficacy and reality of the powers of suggestion by physicians and mesmerizers (or hypnotizers), and then refuse to believe in the same powers when used for evil motives. And if you do, then you believe in Sorcery.
You cannot believe in good and disbelieve in evil, accept genuine money and refuse to credit such a thing as false coin.
Nothing can exist without its contrast, and no day, no light, no good could have any representation as such in your consciousness, were there no night, darkness nor evil to offset and contrast them.
Enq: Indeed, I have known men, who, while thoroughly believing in that which you call great psychic, or magic powers, laughed at the very mention of Witchcraft and Sorcery.
Theo: What does it prove? Simply that they are illogical. So much the worse for them, again. And we, knowing as we do of the existence of good and holy Adepts, believe as thoroughly in the existence of bad and unholy Adepts – or Dugpas.”
H. P. Blavatsky
The Mark Of God: Understanding Your "I AM Presence" 