As in the organic world there is no organ, so in the world of thought
there is no thought, which may not be called into existence by long
persistent effort. If a man wants either to believe or disbelieve the
Christian miracles he can do so if he tries hard enough; but if he does
not care whether he believes or disbelieves and simply wants to find out
which side has the best of it, this he will find a more difficult matter.
Nevertheless he will probably be able to do this too if he tries.