“The diseases which are hard to cure in neighborhoods… are catarrh, hoarseness, coughs, pleurisy, consumption, spitting of blood, and all others that are cured not by lowering the system but by building it up. They are hard to cure, first, because they are originally due to chills; secondly, because the patient's system being already exhausted by disease, the air there, which is in constant agitation owing to winds and therefore deteriorated, takes all the sap of life out of their diseased bodies and leaves them more meager every day. On the other hand, a mild, thick air, without drafts and not constantly blowing back and forth, builds up their frames by its unwavering steadiness, and so strengthens and restores people who are afflicted with these diseases.”

Section 9
Religio Medici (1643), Part II

7:87
Variant translation: What cannot be cured by medicaments is cured by the knife, what the knife cannot cure is cured with the searing iron, and whatever this cannot cure must be considered incurable.
Aphorisms

According to The Veterinarian (Monthly Journal of Veterinary Science) for 1851, edited by Mr. Percivall, this is Ben Jonson's "satirical definition of physic".
Misattributed

Quoting from Estes Kefauver
Misattributed

Book II, Ch. 3. The Custom of the Isle of Cea
Essais (1595), Bartlett's Familiar Quotations, 10th ed. (1919)

Detachment
Source: I am That, P.116.

Under Fire (1916), Ch. 1 - The Vision

Financial Sense http://www.financialsense.com/fsu/editorials/steer/2007/0805.html Also quoted in “Covert Operation”, Jane Mayer, The New Yorker, (Aug. 30, 2010)