I shall further add, said cleanthes, to what you have so well urged, that one great advantage of the principle of Theism, is, that it is the only system of cosmogony which can be rendered intelligible and complete, and yet can throughout preserve a strong analogy to what we every day see and experience in the world. The comparison of the universe to a machine of human contrivance, is so obvious and natural, and is justified by so many instances of order and design in Nature, that it must immediately strike all unprejudiced apprehensions, and procure universal approbation. Whoever attempts to weaken this theory, cannot pretend to succeed by establishing in its place any other that is precise and determinate: It is sufficient for him if he start doubts and difficulties; and by remote and abstract views of things, reach that suspense of judgement, which is here the utmost boundary of his wishes. But, besides that this state of mind is in itself unsatisfactory, it can never be steadily maintained against such striking appearances as continually engage us into the religious hypothesis. A false, absurd system, human nature, from the force of prejudice, is capable of adhering to with obstinacy and perseverance: But no system at all, in opposition to a theory supported by strong and obvious reason, by natural propensity, and by early education, I think it absolutely impossible to maintain or defend.
So little, replied Philo, do I esteem this suspense of judgement in the present case to be possible, that I am apt to suspect there enters somewhat of a dispute of words into this controversy, more than is usually imagined. That the works of Nature bear a great analogy to the productions of art, is evident; and according to all the rules of good reasoning, we ought to infer, if we argue at all concerning them, that their causes have a proportional analogy. But as there are also considerable differences, we have reason to suppose a proportional difference in the causes; and in particular, ought to attribute a much higher degree of power and energy to the supreme cause, than any we have ever observed in mankind. Here then the existence of a deity is plainly ascertained by reason: and if we make it a question, whether, on account of these analogies, we can properly call him a mind or intelligence, notwithstanding the vast difference which may reasonably be supposed between him and human minds; what is this but a mere verbal