"I own it is much easier to confute than establish, and I should not be very Sanguin about the Non-existence of animal Spirits, but that I have observ'd the dwelling so much upon them, has led Physicians too much to neglect the mending Juices, the opening Obstructions, and the strengthening the Solids, wherein only the proper and solid Cure of nervous Distempers consists; and apply to Volatiles, Foetids, and Stimulants: which, at best, are but a Reprieve, and is not unlike blowing up the Fire, but at the same Time forcing it to spend faster, and go out sooner; for Volatiles, Aromaticks, and Cordials, are much of one and the fame Nature, and all but Whips, Spurs, and pointed Instruments to drive on the resty and unwilling Jade."
— Cheyne, George (1671-1743)
See The English Malady: or, a Treatise of Nervous Diseases of All Kinds, As Spleen, Vapours, Lowness of Spirits, Hypochondriacal, and Hysterical Distempers, &c. In Three Parts. Part I. of the Nature and Cause of Nervous Distempers. Part II. of the Cure of Nervous Distempers. Part III. Variety of Cases That Illustrate and Confirm the Method of Cure. With the Author’s Own Case at Large. (London: Printed for G. Strahan in Cornhill, and J. Leake at Bath, 1733). <Link to ESTC>