Date: 1755

"For if Irritability subsists in parts separate from the body, and not subject to the command of the soul, if it resides every where in the muscular fibres, and is independent of the nerves, which are the satellites of the soul, it is evident, that it has nothing in common with the soul,...

— Von Haller, Albrecht (1708-1777)

Date: 1773

"Thus likewise, when we form to ourselves a notion of the soul, we ever represent it as a thin shade, or subtil matter; in short, as a corporeal being, if we form any image of it at all."

— Marat, Jean-Paul (1743-1793)

Date: 1773

"Nevertheless, if regular imagination requires the elasticity of our organs, it requires it in a less degree than reason; for its objects are neither necessarily dependant on each other, nor closely connected its productions are only detached parts, where the mind has nothing to do but to weave t...

— Marat, Jean-Paul (1743-1793)