were Epicurus, Diogenes, Apollonius, Lucretius, Paracelsus, Des Cartes, and others;' who, if they were now in the world, tied fast, and separate from their followers, would, in this our undistinguishing age, incur manifest danger of phlebotomy, and whips, and chains, and dark chambers, and straw. For what man, in the natural state or course of thinking, did ever conceive it in his power to reduce the notions of all mankind exactly to the same length, and breadth, and height of his own? Yet this is the first humble and civil design of all innovators in the empire of reason. Epicurus modestly. hoped, that, one -time or other, a certain fortuitous concourse of all men's opinions, after perpetual justlings, the sharp with the smooth, the light and the heavy; the round and the square, would, by certain clinamina, unite in the notions of atoms and void, as these did in the originals of all things. Cartesius reckoned to see, before he died, the sentiments of all philosophers, like so many lesser stars in his romantic system, wrapped and drawn within his own vortex. Now, I would gladly be informed, how it is possible to account for such imaginations as these in particular men, without recourse to my phænomenon of vapours, ascending from the lower faculties to overshadow the brain, and there distilling into conceptions, før

which the narrowness of our mother-tongue has not yet assigned any other name besides that of madness, or phrensy. Let us therefore now conjecture, how it comes to pass, that none of these great prescribers do ever fail providing themselves and their notions with a number of implicit disciples. And, I think, the reason is easy to be assigned; for there is a peculiar string in the harmony of human understanding, which in several individuals is exactly of the same tuning. This if you can dextrously screw up to its right key, and then strike gently upon it; whenever you have the good fortune to light among those of the same pitch, they will, by a secret necessary sympathy, strike exactly at the same time. And in this one circumstance lies all the skill or luck of the matter: for if you chance to jar -the string among those who are either above or below your own height; instead of subscribing to your doctrine, they will tie you fast, call you mad, and feed you with bread and water. It is therefore a point of the nicest conduct, to distinguish and adapt this noble talent with respect to the differences of persons and of times. Cicero understood, this very well, when writing to a friend in England, with a caution, among other matters, to beware of being cheated by our hackney-coachmen, (who, it seems, in those days

were as arrant rascals as they are now), has these remarkable words: Est quod gaudeas te in ista loca venisse, ubi aliquid sapere viderere*. For, to speak a bold truth, it is a fatal miscarriage, so ill to order affairs, as to pass for a fool in one company, when in treated as a philosopher. certain gentlemen of my

another you might be Which I desire some acquaintance to lay up

in their hearts, as a very seasonable innuendo. This, indeed, was the fatal mistake of that worthy gentleman, my most ingenious friend, Mr Wotton; a person, in appearance, ordained for great designs, as well as performances. Whether you will consider his notions or his looks, surely no man ever advanced into the public with fitter qualifications of body and mind, for the propagation of a new religion. Oh, had those happy talents, misapplied to vain philosophy, been turned into their proper channels of dreams and visions, where distortion of mind and countenance are of such sovereign use; the base detracting world would not then have dared to report, that something is amiss, that his brain hath undergone an unlucky shake; which even his brethren modernists themselves, like ungrates, do whisper so loud, that it reaches up to the very garret I am now writing in.

Epist. ad Fam. Trebat.

Lastly, Whosoever pleases to look into the fountains of enthusiasm, from whence, in all ages, have eternally proceeded such fattening streams, will find the spring-head to have been as troubled and muddy as the current. Of such great emolument is a tincture of this vapour, which the world calls madness, that, without its help, the world would not only be deprived of those two great blessings, conquests and systems, but even all mankind would unhappily be reduced to the same belief in things invisible.

Now, the former postulatum being held, that it is of no import from what originals this oupour proceeds, but either in what angles it strikes, and spreads over the understanding, or upon what species of brain it ascends; it will be a very delicate point, to cut the feather, and divide the several reasons to a nice and curious reader, how this numerical difference in the brain can produce effects of so vast a difference from the same vapour, as to be the sole point of individuation between Alexander the Great, Jack of Leyden, and Monsieur Des Cartes. The present argument is the most abstracted that ever I engaged in; it strains my faculties to their highest stretch: and I desire the reader to attend with utmost perpensity; for I now proceed to unravel this knotty point.

"

Having therefore so narrowly passed through this intricate difficulty, the reader will, I am sure, agree with me in the conclusion, that if the moderns mean by madness only a disturbance or transposition of the brain, by force of certain vapours issuing up from the lower faculties, then has this madness been the parent of all those mighty revolutions, that have happened in empire, in philosophy and in religion. For the brain, in its natural position and state of serenity, disposeth its owner to pass his life in the common forms, without any thoughts of subduing multitudes to his own power, his reasons, or his visions: and the more he shapes his understanding by the pattern of human learning, the less he is inclined to form parties after his particular notions; because that instructs him in

*Here is another defect in the manuscript; but I think the author did wisely, and that the matter which thus strained his faculties, was not worth a solution; and it were well if all metaphysical cobweb problems were no otherwise answered.