Date: 1664

"Indeed, one may compare the nerves of the machine I am describing with the pipes in the works of these fountains, its muscles and tendons with the various devices and springs which serve to set them in motion, its animal spirits with the water which drives them, the heart with the source of the ...

— Descartes, René (1596-1650)

Date: 1747

"The figures, which must actuate her, remain / As yet quite uncollected in the brain; / Exterior objects have not furnish' yet / Th' ideal stores which Age is sure to get."

— Cardinal Melchior de Polignac (1661-1741)

Date: 1748, 1749

"These are the methods, as far as I comprehend, that have filled the brain with ideas, for the reception of which nature has formed it."

— Julien Offray de La Mettrie (1709-1751)