we make no doubt, that it takes place in TITIUS and MAEVIUS: But from its circulation in frogs and fishes, it is only a presumption, though a strong one, from analogy, that it takes place in men and other animals. The analogical reason|ing is much weaker, when we infer the circula|tion of the sap in vegetables from our experience, that the blood circulates in animals; and those, who hastily followed that imperfect analogy, are found, by more accurate experiments, to have been mistaken.If we see a house, CLEANTHES, we conclude, with the greatest certainty, that it had an archi|tect or builder; because this is precisely that species of effect, which we have experienced to proceed from that species of cause. But surely you will not affirm, that the universe bears such a resemblance to a house, that we can with the same certainty infer a similar cause, or that the analogy is here entire and perfect. The dissi|militude is so striking, that the utmost you can here pretend to is a guess, a conjecture, a pre|sumption concerning a similar cause; and how that pretension will be received in the world, I leave you to consider.It would surely be very ill received, replied CLEANTHES; and I should be deservedly bla|med and detested, did I allow, that the proofs of a Deity amounted to no more than a guess or conjecture. But is the whole adjustment of means to ends in a house and in the universe 0