Joseph Butler: Five Sermons

The most memorable lines from my first read of this smart work are from the second sermon, first page, quoted as follows: "A man can as little doubt whether his eyes were given him to see with, as he can doubt of the truth of the science of optics deduced from ocular experiments. And allowing the inward feeling, shame, a man can as little doubt whether it was given him to prevent his doing shameful actions, as he can doubt whether his eyes were given him to guide his steps. And as to these inward feelings themselves - that they are real..."