Date: 1751

"True philosophy was not known till that time; and it is but justice to say, that commencing from the last year of Cardinal Richelieu, and proceeding to those which immediately succeeded the death of Louis XIV. there came to pass in our arts, in our minds, in our manners, as well as in our govern...

— Arouet, François-Marie [known as Voltaire] (1694-1778)

Date: 1764

"But behold, this soul of thought frequently has the ascendancy over the animal soul. The thinking soul orders its hands to grasp, and they grasp. It does not tell its heart to beat, its blood to run, its chyle to form; all these things happen without it: so here we have two perplexed souls which...

— Arouet, François-Marie [known as Voltaire] (1694-1778)

Date: 1764

"Nobody knows what really is the being called 'spirit', to which even you give the material name of 'spirit', which means wind."

— Arouet, François-Marie [known as Voltaire] (1694-1778)