(p. 53) Where men had once said, ‘Credo ut intelligam’ (understanding can come only through belief), they now said, ‘Intelligo ut credam’ (belief can come only through understanding). In 1277, Roger Bacon was imprisoned for an indefinite period for holding these opinions. Free and rational investigation of nature was to come hard in the clash between reason and faith which would echo down to our own time.
Source:
Burke, James. The Day the Universe Changed: How Galileo’s Telescope Changed the Truth and Other Events in History That Dramatically Altered Our Understanding of the World. Back Bay Books, 1995.