From whence then proceeded this his skill? was it from his profound learning, or from much reading of learned Authors concerning that subject? Answ. … - Matthew Hopkins

Exod.22.18,
Thou shalt not suffer a witch to live.

How can any possibly beleeve that the Devill and the Witch joyning together, should have such power, as the Witches confesse to kill such such a man, child, horse, cow, the like; if we beleeve they can doe what they will, then we derogate from Gods power, who for certaine limits the Devill and the Witch; and I cannot beleeve they have any power at all.
Answ. God suffers the Devill many times to doe much hurt, and the devill doth play many times the deluder and impostor with these Witches, in perswading them that they are the cause of such and such a murder wrought by him with their consents, when and indeed neither he nor they had any hand in it, as thus: We must needs argue, he is of a long standing, above 6000. yeers, then he must needs be the best Scholar in all knowledges of arts and tongues, & so have the best skill in Physicke, judgment in Physiognomie, and knowledge of what disease is reigning or predominant in this or that mans body, (and so for cattell too) by reason of his long experience. This subtile tempter knowing such a man lyable to some sudden disease, (as by experience I have found) as Plurisie, Imposthume, &c. he resorts to divers Witches; if they know the man, and seek to make a difference between the Witches and the party, it may be by telling them he hath threatned to have them very shortly searched, and so hanged for Witches, then they all consult with Satan to save themselves, and Satan stands ready prepared, with a What will you have me doe for you, my deare and nearest children, covenanted and compacted with me in my hellish league, and sealed with your blood, my delicate firebrand-darlings.

That he must needs be the greatest Witch, Sorcerer, and Wizzard himselfe, else hee could not doe it.
Answ. If Satans kingdome be divided against it selfe, how shall it stand?