Essays on the Active Powers of Man Quotes

“No man thinks of asking himself what reason he has to believe that his neighbor is a living creature. He would be not a little surprised if another person should ask him so absurd a question: arid perhaps could not give any reason which would not equally prove a watch or a puppet to be a living creature. But, though you should satisfy him of the weakness of the reasons he gives for his belief, you cannot make him in the least doubtful. This belief stands upon another foundation than that of reasoning and therefore, whether a man can give good reasons for it or not, it is not in his power to shake it off.That many operations of the mind have their natural signs in the countenance, voice and gesture, I suppose every man will admit. . . . The only question is, whether we understand the signification of those signs, by the constitution of our nature, by a kind of natural perception similar to the perceptions of sense; or whether we gradually learn the signification of such signs from experience, as we learn that smoke is a sign of fire... It seems to me incredible, that the notions men have of the expressions of features, voice, and gesture, are entirely the fruit of experience.”
― Thomas Reid, Essays on the Active Powers of Man