eing, a something which thinks. But this being, who is conscious of his own thoughts, is also conscious that he exists not by himself, that he has not existed from all eternity, that he is subject to changes, that even the simple ideas, which compose his thoughts, are not produced by himself, but acquired through his senses from external objects; and, in short, that he depends upon various causes placed without himself, and undergoes vicissitudes, which it is not in his power to remove. Therefore man has not within himself the reason of his own existence, but he must trace it to another, who is the Author of it. Now, this Author cannot have received His own existence from another, if He is to be considered the primary cause; otherwise we should fall into a succession of causes and effects to infinity. Then, the true Author of our existence is one who exists by Himself, and as such He is eternal, omnipotent, all-wise, etc., etc.; He is God.
VII. Another source, affording the proof of the existence of Go