[1] Now let those come to themselves who with difficulty admit, that the aliments are capable of rendering some more temperate, others more dissolute, some incontinent, some frugal, confident, timorous, mild, modest, or quarrelsome; let them come to me and hear what it would be proper for them to eat, and what to drink. They will find from hence a great assistance in moral philosophy; they will likewise find from hence a great accession to their intellectual faculties; they will become more ingenious, have better memories, and be more studious and wise. For besides the proper sort of food and liquors, I will instruct them in the nature of air and climates, and point out to them what countries they should chuse to reside in, what they should avoid. The book which proves that manners are influenc’d by bodily constitutions, Cap. 9ᵒ. Charterius, t. 5. p. 457. Observations of the like nature are to be found in HIPPOCRATES, ARISTOTLE, and PLATO. [2] Plato’s works, p. 648. [3] ’Tis an admirable observation of MONTESQUIEU: All things fatigue us at last, and above all great pleasures; the fibres, that were the organs of it, stand in need of rest: we must employ others better adapted to serve us, and thus, as it were, divide our labour. _Essay upon taste._ [4] LORRY _upon melancholy and melancholy disorders_. Tom. I. [5] VAN SWIETEN’S _Comment. in_ BOERHAVII _aphor._ Tom. III. p. 413. [6] _Traité du bon chyle_, tom. II. p. 647. [7] Th. BORDEUX, _prix de l’academie de chir._ tom. VI. p. 199. [8] Conf. FLEMING _Neuropathia, præf._ [9] _De morbis nervorum_, p. 456. [10] _Traité des vapeurs hysteriques_, p. 248. [11] _Epistol. lib. 2. ep. 9._ [12] _Epistol. ad_ HIPPOCRATEM. _Hipp. Fæsii._ tom. II. p. 1288. [13] _De locis affectis, lib. 5. cap. 6. Charter._ tom. VII. p. 492. [14] _Medicin. ration. de epilepsia._ § 19. [15] _Felic._ PLATERI _observat._ p. 28. [16] VAN SWIETEN, tom. IV. p. 305. [17] _Gazette de France, Fevr. 25, 1763._ [18] _Epistol. L. 2, ep. 40._ Neither write back to me in prose or in verse, lest you should bring your health, which is not yet confirm’d, into new danger; for the spirits will be easily warm’d by attention: hence blood, hence the habit of body. [19] _De sedibus & causis morbonum. ep. 3._ § 13. [20] _Prælect. ad instit._ t. 7. p. 145. [21] _De sedib. & caus. ep._ 3. §. 17. [22] HALLERI _Element. Physiologiæ_, t. 4. p. 317. [23] _De locis affectis_, l. 3. c. 5. [24] _Ad libellum_ HIPPOCRATIS _de humor_. p. 211.