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."

— 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."

— Leibniz, Gottfried Wilhelm (1646-1716)

Date: 1708, 1737, 1742

"Je ne suis nullement pour la tabula rasa de Aristote, & il y a quelque chose de solide dans ce que Platon appelloit le reminiscence."

— Leibniz, Gottfried Wilhelm (1646-1716)

Date: 1714

If we imagine a "machine whose structure makes it think, sense, and have perceptions" enlarged to the size of a mill, upon "inspecting its interior, we will only find parts that push one another, and we will never find anything to explain a perception"

— Leibniz, Gottfried Wilhelm (1646-1716)

Date: 1714

"There is an infinity of past and present shapes and motions that enter into the efficient cause of my present writing"

— Leibniz, Gottfried Wilhelm (1646-1716)

Date: 1714

Souls, "in general, are living mirrors or images of the universe of creatures."

— Leibniz, Gottfried Wilhelm (1646-1716)

Date: 1714

Each "mind [is] like a little divinity in its own realm."

— Leibniz, Gottfried Wilhelm (1646-1716)

Date: 1714

"But when a monad has organs that are adjusted in such a way that, through them, there is contrast and distinction among the impressions they receive, and consequently contrast and distinction in the perceptions that represent them [in the monads] (as, for example, when the rays of light are conc...

— Leibniz, Gottfried Wilhelm (1646-1716)

Date: 1716

"To say that souls are intelligent points is to use an expression that is insufficiently exact. When I call them centers of concentrations of external things, I am speaking analogically."

— Leibniz, Gottfried Wilhelm (1646-1716)

Date: 1765

"Une pierre de marbre qui a des veines plutôt que d'une pierre de marbre tout unie ou de tablettes vides, c'est-à-dire de ce qui s'appelle tabula rasa chez les philosophes."

— Leibniz, Gottfried Wilhelm (1646-1716)