Date: 1664

"You can think of our machine's heart and arteries, which push the animal spirits into the cavities of its brain, as being like the bellows of an organ, which push air into the wind-chests; and you can think of external objects, which stimulate certain nerves and cause spirits contained in the ca...

— Descartes, René (1596-1650)

Date: 1733

"I have formerly suggested, that the best Similitude I can form of the Nature and Actions of this Principle upon the Organs of its Machin, is that of a skillful Musician playing on a well-tun'd Instrument."

— Cheyne, George (1671-1743)

Date: 1763 (repr. 1776); 1794 (repr. 1799)

"The power which the mind evidently has of moving the various parts of the body by nerves inserted in the muscles is truly wonderful, seeing the mind neither knows the muscles to be moved, nor the machinery, by which the motion in it is to be produced: so that it is as if a musician should always...

— Doddridge, Philip (1702-1751)

Date: 1784

"Thy piercing thought / Unaided saw each movement of the mind, / As skilful artists view the small machine, / The secret springs and nice dependencies, / And to thy mimic scenes, by fancy wrought / To such a wond'rous shape, th'impassion'd breast / In floods of grief, or peals of laughter bow'd, ...

— Jago, Richard (1715-1781)