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)