With me the horrid doubt always arises whether the convictions of man’s mind, which has been developed from the mind of lower animals, are of any value or at all trustworthy. Would any one trust in the convictions of a monkey’s mind, if there are any convictions in such a mind?–Charles Darwin to W. Graham, July 3, 1881, in The Life and Letters of Charles Darwin, ed. Francis Darwin (1887; repr., Boston: Elibron), 1:285.
Quote of the Week: Charles Darwin | Reflections
This quote is interesting enough given that Darwin did indeed have doubts of his theory. Samples also posted a really good essay on that just a few days ago. Read it a the following link: Darwin's Doubts.