By going one step further back in thought, discordant opinions are reconciled by being seen to be two extremes of one principle, and we can never go so far back as to preclude a still higher vision.
That is a simple rule, and easy to remember. When I, a thoughtful and unblessed Presbyterian, examine the Koran, I know that beyond any question every Mohammedan is insane; not in all things, but in religious matters.
Why needs a man be rich? Why must he have horses, fine garments, handsome apartments, access to public houses, and places of amusement? Only for want of thought.