demonstrated, which indeed he has cast into a different method; but as far as I observe, has nothing but what is particularly discours'd by Sir Charles from page 179. to the end of the Book.
In one thing indeed Master Ferguson takes the confidence to differ from Sir Charles, whether Miracles be always a certain demonstrati∣on of the truth of any Doctrine? or whether God may▪ not some∣times permit Impostors to work Miracles for the tryal of our Faith? This latter Sir Charles affirms, Mr. Ferguson denies; which is not civilly done to dispute such a nice point with his friend, which he confesses is not very material, when he had borrowed from him all his substantial and material notions. But the best of it is, Sir Charles has no need to stand to his Courtesie in this matter, and it is well for him he has not.
And upon this occasion I cannot but take notice, how Master Ferguson deals with Des Cartes; he charges him with affirming, Deum posse fallere, si velit, that God can deceive, if he please. Now Sir you know very well upon what occasion Des Cartes said this; it was when in order to free his mind from the prejudices of sense and education, and popular opinions, he set himself to doubt, as far as possibly he could, as long as there was the least imaginable pretence for doubting; and therefore doubts whether there be a God, or any thing else: and whether this God be not a deceiver, &c. And Master Ferguson might as well challenge Des Cartes with denying that he himself had any body, or that there were any ex∣ternal objects, such as the Sun, Moon, and Stars; as with affirm∣ing, that God might deceive, if he pleased; for he says the one as much as the other, while he was in this doubting humour, and only upon a design to come to some first Principle, which he could not doubt of; and to lay the foundations of a more certain know∣ledge: and therefore he immediately adds▪ Et certe cum nullam oc∣casionem habeam existimandi aliquem Deum esse deceptorent, neo quidem adhuc satis sciam, utrum sit aliquis Deus, valde tenuis, &, ut ita lo∣quar, metaphysica dubitandi ratio est, quae tantum ex ea opinione depen∣det; ut autem etiam illa tolletur, quamprimum occurret occasio, exami∣nare debeo, an sit Deus, & si sit, an possit esse deceptor, hac enim re ignorata, non videor de ulla alia plane certus esse unquam posse, Medit. Tertia. i. e. Since I have no occasion at all to think, that God is a