"The supercilious censors will object against the Sybils, holy Magicians and the Gospel itself sooner than receive the name of Magic into favor. So conscientious are they that neither Apollo nor all the Muses, nor an angel from heaven can redeem me from their curse. Whom therefore I advise that they read not our writings, nor understand them, nor remember them. For they are pernicious and full of poison; the gate of Acheron is in this book; it speaks stones—let them take heed that it beat not out their brains. But you that come without prejudice to read it, if you have so much discretion of prudence as bees have in gathering- honey, read securely, and believe that you shall receive no little profit, and much pleasure; but if you shall find any things that may not please you, let them alone and make no use of them, for I do not approve of them, but declare them to you. But do not refuse other things, for they that look into the books of physicians do, together with antidotes and medicines, read also of poisons,"