
If we take in our hand any volume; of divinity or school metaphysics, for instance ; let us ask, Does it contain any abstract reasoning concerning quantity or number ? No. Does it contain any experimental reasoning concerning matter of fact and existence ? No. Commit it then to the flames ; for it can contain nothing but sophistry and illusion
Essays and treatises on several subjects, Volume 2 - Página 167 http://books.google.com.br/books?id=dDU1AAAAIAAJ&pg=PA167, David Hume - Printed for Bell and Bradfute, 1825