Date: 1729

"You have seen those Engines that raise Water by the Help of Fire; the Steam you know, is that which forces it up; it is as impossible to see the volatile Particles that perform the Labour of the Brain, when the Creature is dead, as in the Engine it would be to see the Steam, (which yet does all ...

— Mandeville, Bernard (bap. 1670, d. 1733)

Date: 1729

"The Brain of an Animal cannot be look'd and search'd into whilst it is alive. Should you take the main Spring out of a Watch, and leave the Barrel that contain'd it, standing empty, it would be impossible to find out what it had been that made it exert itself, whilst it shew'd the Time"

— Mandeville, Bernard (bap. 1670, d. 1733)

Date: 1729

"The main Spring in us is the Soul, which is immaterial and immortal"

— Mandeville, Bernard (bap. 1670, d. 1733)

Date: 1729

"What is it, that superintends Thought in them? where must we look for it? which is the main Spring?... I can answer you no otherwise, than Life."

— Mandeville, Bernard (bap. 1670, d. 1733)

Date: 1748, 1749

"The former have explored and unravelled the labyrinth of Man. They alone have discovered to us those hidden springs concealed under a cover, which hides from us so many wonders."

— Julien Offray de La Mettrie (1709-1751)

Date: 1748, 1749

"Man is a machine so compound, that it is impossible to form at first a clear idea thereof, and consequently to define it. This is the reason, that all the enquiries the philosophers have made a priori, that is, by endeavouring to raise themselves on the wings of the understanding have proved ine...

— Julien Offray de La Mettrie (1709-1751)

Date: 1748, 1749

"In proportion as the motion of the blood grows calm, a soft soothing sense of peace and tranquility spreads itself over the whole machine; the soul finds itself sweetly weighed down with slumber, and sinks with the fibres of the brain: it becomes thus paralytic as it were, by degrees, together w...

— Julien Offray de La Mettrie (1709-1751)

Date: 1748, 1749

"The human body is a machine that winds up its own springs: it is a living image of the perpetual motion."

— Julien Offray de La Mettrie (1709-1751)

Date: 1748, 1749

"We think not, nay, we are not honest men, but as we are chearful, or brave; all depends on the manner of winding up the machine."

— Julien Offray de La Mettrie (1709-1751)

Date: 1748, 1749

"Is there any further occasion, to prove that man is but an animal, made up of a number of springs, which are all put in motion by each other; and yet we cannot tell to which part of the human structure first set her hand. If these springs differ amongst themselves, this arises from their particu...

— Julien Offray de La Mettrie (1709-1751)