[I]f the spirit of religion join itself to the love or wonder, there is an end to common sense; and human testimony,  in thse circumstances, loses all pretensions to authority. (David Hume: Of Miracles: Enquiry X)

[W}e must never venture with speculative reason beyond the limits of ex\perience. (Emmanuel Kant: Preface to the Second Edition: Critique of Pure Reason Bxxiv)