I thought my self then obliged in Conscience, to endeavour to undeceive him; and therefore, said I, "Though you be very stiff and obstinate in your Opinions, yet I have plainly seen supernatural Things happen:" "Say you so," continued he; "you little know, that the force of Imagination is able to cure all the Diseases which you attribute to supernatural Causes, by reason of a certain natural Balsam, that contains Qualities quite contrary to the qualities of the Diseases that attack us; which happens, when our Imagination informed by Pain searches in that place for the specifick Remedy, which it applies to the Poison. That's the reason, why an able Physician of your World advises the Patient to make use of an Ignorant Doctor whom he esteems to be very knowing, rather than of a very Skilful Physician whom he may imagine to be Ignorant; because he fancies, that our Imagination labouring to recover our Health, provided it be assisted by Remedies, is able to cure us; but that the strongest Medicines are too weak, when not applied by Imagination. Do you think it strange, that the first Men of your World lived so many Ages without the least Knowledge of Physick? No. And what might have been the Cause of that, in your judgement; unless their Nature was as yet in its force, and that natural Balsam in vigour, before they were spoilt by the Drugs wherewith Physicians consume you; it being enough then for the recovery of ones Health, earnestly to wish for it, and to imagine himself cured: So that their vigorous Fancies, plunging into that vital Oyl, extracted the Elixir of it, and applying Actives to Passives, in almost the twinkling of an Eye they found themselves as sound as before: Which, notwithstanding the Depravation of Nature, happens even at this day, though somewhat rarely; and is by the Multitude called a Miracle: For my part, I believe not a jot on't, and have this to say for my self, that it is easier for all these Doctors to be mistaken, than that the other may not easily come to pass: For I put the Question to them; A Patient recovered out of a Feaver, heartily desired, during his sickness, as it is like, that he might be cured, and, may be, made Vows for that effect; so that of necessity he must either have dyed, continued sick, or recovered: Had he died, then would it have been said, kind Heaven hath put an end to his Pains; Nay, and that according to his Prayers, he was now cured of all Diseases, praised be the Lord: Had his Sickness continued, one would have said, he wanted Faith; but because he is cured, it's a Miracle forsooth. Is it not far more likely, that his Fancy, being excited by violent Desires, hath done its Duty and wrought the Cure? For grant he hath escaped, what then? must it needs be a Miracle? How many have we seen, pray, and after many solemn Vows and Protestations, go to pot with all their fair Promises and Resolutions."