One voice in the Great Conversation itself announces this modern point of view. In the closing paragraph of his An Enquiry Concerning Human Understanding, David Hume writes: "When we run over libraries, persuaded of these principles, what havoc must we make? If we take in our hand any volume ... 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 flames: for it can contain nothing but sophistry and illusion." ... the positivists of our own day, would commit to burning or, what is the same, to dismissal from serious consideration ... Those books ... argue the case against the kind of positivism that asserts that everything except mathematics and experimental science is sophistry and illusion. ... The Great Conversation ... contains both sides of the issue.