AND NOT OTHER STANDARDS • 41 “Perceptive reason is the handmaid of conscience, but not conscience hers. If you resolve to do right, you will do wisely; but resolve only to do wisely, and you will never do right.” In a letter to a friend, published in the London Christian, Herbert Spencer said: “In my earliest years I constantly made the foolish supposition that conclusive proofs would change belief. But experience has long since dissipated my faith in man’s rationality.” None of these men quoted