_For if it be true that one man cannot be perfect in euery arte and profession, and therefore in cases out of our owne callings, we do depend vpon those which haue beene trayned up in other particular subiects, beleeuing men in their owne professions: Why should we not prefer the iudgements of Phisitions in a question concerning the actions and passions of mans bodie (the proper subiect of that profession) before our owne conceites; as we do the opinions of Diuines, Lawyers, Artificers, &c. in their proper Elements. Neither haue I done this as taking vpon me to reforme the mindes of men which are not vnder my charge (for I could willingly haue permitted euery man to enioy his owne opinion:) But being a Phisition, and iudging in my conscience that these matters haue been mistaken by the commõ people; I thought good to make knowne the doctrine of this disease, so farre forth, as may be in a vulgar tongue conueniently disclosed, to the end that the vnlearned and rash conceits of diuers, might be thereby brought to better vnderstanding and moderation; who are apt to make euery thing a supernaturall work which they do not vnderstand, proportioning the bounds of nature vnto their own capacities: which might proue an occasion of abusing the name of God, and make vs to vse holy prayer as vngroundedly as the Papists do their prophane trickes; who are readie to drawe forth their wooden dagger, if they do but see a maid or woman suffering one of these fits of the Mother, coniuring and exorcising them as if they were possessed with euil spirits. And for want of worke, will oftentimes suborne others that are in health, to counterfait strange motions and behauiours: as I once saw in the_ Santo _in_ Padua _fiue or sixe at one sermon interrupting and reuiling the Preacher, vntill he had put them to silence by the signe of the Crosse, and certaine powerlesse spelles_. _Wherefore it behoueth vs as to be zealous in the truth, so to be wise in discerning truth from counterfaiting and naturall causes from supernaturall power. I doe not deny but that God doth in these dayes worke extraordinarily, for the deliuerance of his children, and for other endes best knowne vnto himselfe; and that among other, there may be both possessions by the Diuell, and obsessions and witchcraft, &c. and dispossession also through the Prayers and supplications of his seruants, which is the onely meanes left vnto vs for our reliefe in that case. But such examples being verie rare now adayes, I would in the feare of God aduise men to be very circumspect in pronouncing of a possession: both because the impostures be many, and the effects of naturall diseases be strange to such as haue not looked throughly into them._