Date: 1684
"For certainly there must be some change in our mind when we have some thoughts and then others, and, in fact, ideas of things we are not actually thinking about are in our minds as the shape of Hercules is in rough marble."
preview | full record— Leibniz, Gottfried Wilhelm (1646-1716)
Date: 1696
"Imagine two clocks or watches which agree perfectly ... Put now the soul and the body in place of these two clocks; their accordance may be brought about by one of these three ways."
preview | full record— Leibniz, Gottfried Wilhelm (1646-1716)