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 complete without it. By ingrafting reason on feeling, we “make assurance double sure.”

But reason, not employed to interpret nature, and to improve and perfect common sense and experience, is, for the most part, a building without a foundation.—The criticism exercised by reason then on common sense may be as severe as it pleases, but it must be as patient as it is severe. Hasty, dogmatical, self-satisfied reason is worse than idle fancy, or bigottedbigoted [sic] prejudice. It is systematic, ostentatious in error, closes up the avenues of knowledge, and “shuts the gates of wisdom on mankind.” It is not enough to show that there is no reason for a thing, that we do not see the reason of it: if the common feeling, if the involuntary prejudice sets in strong in favour of it, if in spite of all we can do, there is a lurking suspicion on the side of our first impressions, we must try again, and believe that truth is mightier than we. So, in ordering a definition of any subject,