1. The _a priori_ miracle we call such--not (as the unphilosophic may suppose) because it occurred previously to our own period, or from any consideration of time whatever, but in the logical meaning, as having been derived from our reason in opposition to our experience. This order of miracle it is manifest that Hume overlooked altogether, because he says expressly that we have nothing to appeal to in this dispute except our human experience. But it happens that we have; and precisely where the possibilities of experience desert us. We know nothing through experience (whether physical or historical) of what preceded or accompanied the first introduction of man upon this earth. But in the absence of all experience, our reason informs us--that he must have been introduced by a supernatural agency. Thus far we are sure. For the sole alternative is one which would be equally mysterious, and besides, contradictory to the marks of change--of transition--and of perishableness in our planet itself,--viz. the hypothesis of an eternal unoriginated race: and that is more confounding to the human intellect than any miracle whatever: so that, even tried merely as one probability against another, the miracle would have the advantage. The miracle supposes a supersensual and transcendent cause. The opposite hypothesis supposes effects without any cause. In short, upon any hypothesis, we are driven to suppose--and compelled to suppose--a miraculous state as introductory to the earliest state of nature. The planet, indeed, might form itself by mechanical laws of motion, repulsion, attraction, and central forces. But man could not. Life could not. Organization, even animal organization, might perhaps be explained out of mechanical causes. But life could not. Life is itself a great miracle. Suppose the nostrils formed by mechanic agency; still the breath of life could not enter them without a supernatural force. And _a fortiori_, man, with his intellectual and moral capacities, could not arise upon this planet without a higher agency than any lodged in that nature which is the object of our present experience. This kind of miracle, as deduced by our reason, and not witnessed experimentally, or drawn from any past records, we call an _a priori miracle.