Pray consider, said Philo, whom you are at present inveighing against. You are honouring with the appellation of Atheist all the sound, orthodox divines, almost, who have treated of this subject; and you will at last be, yourself, found, according to your reckoning, the only sound Theist in the world. But if idolaters be Atheists, as, I think, may justly be asserted, and Christian Theologians the same, what becomes of the argument, so much celebrated, derived from the universal consent of mankind?
But because I know you are not much swayed by names and authorities, I shall endeavour to show you, a little more distinctly, the inconveniences of that Anthropomorphism, which you have embraced; and shall prove, that there is no ground to suppose a plan of the world to be formed in the Divine mind, consisting of distinct ideas, differently arranged, in the same manner as an architect forms in his head the plan of a house which he intends to execute.
It is not easy, I own, to see what is gained by this supposition, whether we judge of the matter by Reason or by Experience. We are still obliged to mount higher, in order to find the cause of this cause, which you had assigned as satisfactory and conclusive.
If Reason (I mean abstract reason, derived from inquiries a priori) be not alike mute with regard to all questions concerning cause and effect, this sentence at least it will venture to pronounce, That a mental world, or universe of ideas, requires a cause as much, as does a material world, or universe of objects; and, if similar in its arrangement, must require a similar cause. For what is there in this subject, which should occasion a different conclusion or inference? In an abstract view, they are entirely alike; and no difficulty attends the one supposition, which is not common to both of them.
Again, when we will needs force Experience to pronounce some sentence, even on these subjects which lie beyond her sphere, neither can she perceive any material difference in this particular, between these two kinds of worlds; but finds them to be governed by similar principles, and to depend upon an equal variety of causes in their operations. We have specimens in miniature of both of them. Our own mind resembles the one; a vegetable or animal body the other. Let experience, therefore, judge from these samples. Nothing seems more delicate, with regard to its causes, than thought; and as these causes never operate in two persons after the same manner, so we never find two persons who think exactly alike. Nor indeed does the same person think exactly alike at any two different periods of time. A difference of age, of the disposition of his body, of weather, of food, of company, of books, of passions; any of these particulars, or others more minute, are sufficient to alter the curious machinery of thought, and communicate to it very different movements and operations. As far as we can judge, vegetables and animal bodies are not more delicate in their motions, nor depend upon a greater variety or more curious adjustment of springs and principles.