Note 240 — Chapter II · (continued 2)

Under the influence of the inductive philosophy, the theological theory of disease was seriously weakened before the middle of the seventeenth century; and by the middle, or at all events the latter half, of the eighteenth century, it had lost all its partisans among scientific men. At present it still lingers on among the vulgar; and traces of it may be found in the writings of the clergy, and in the works of other persons little acquainted with physical knowledge. When the cholera broke out in England, attempts were made to revive the old notion; but the spirit of the age was too strong for such efforts to succeed; and it may be safely predicted that men will never return to their former opinions, unless they first return to their former ignorance. As a specimen of the ideas which the cholera tended to excite, and of their antagonism to all scientific investigation, I may refer to a letter written in 1832 by Mrs. Grant, a woman of some accomplishments, and not devoid of influence (Correspondence of Mrs. Grant, London, 1844, vol. iii. pp. 216, 217), where she states that ‘it appears to me great presumption to indulge so much as people do in speculation and conjecture about a disease so evidently a peculiar infliction, and different from all other modes of suffering hitherto known.’ This desire to limit human speculation is precisely the feeling which long retained Europe in darkness; since it effectually prevented those free inquiries to which we are indebted for all the real knowledge we possess. The doubts of Boyle upon this subject supply a curious instance of the transitory state through which the mind was passing in the seventeenth century, and by which the way was prepared for the great liberating movement of the next age. Boyle, after stating both sides of the question, namely, the theological and the scientific, adds, ‘and it is the less likely that these sweeping and contagious maladies should be always sent for the punishment of impious men, because I remember to have read in good authors, that as some plagues destroyed both men and beasts, so some other did peculiarly destroy brute animals of very little consideration or use to men, as cats,’ &c.

‘Upon these and the like reasons, I have sometimes suspected that in the controversy about the origin of the plague, namely, whether it be natural or supernatural, neither of the contending parties is altogether in the right; since it is very possible that some pestilences may not break forth without an extraordinary, though perhaps not immediate, interposition of Almighty God, provoked by the sins of men; and yet other plagues may be produced by a tragical concourse of merely natural causes.’ Discourse on the Air, in Boyle's Works, vol. iv. pp. 288, 289. ‘Neither of the contending parties is altogether in the right!’—an instructive passage towards understanding the compromising spirit of the seventeenth century; standing midway, as it did, between the credulity of the sixteenth, and the scepticism of the eighteenth.