XIV. In the third place, whenever it is certain that the person, on whom a deception is practised, discovers that the intent of it was to do him a service; he will not feel it as a grievance, nor can it come under the strict denomination of a lie or falsehood. It will be no more an INJURY, than it would be a THEFT in any one, presuming upon an owner's consent, to take something belonging to that owner, in order to convert it to his use in a very beneficial way. For in cases of notorious certainty, a PRESUMPTION may be taken for express consent. But it is evident that no man would CONSENT to receive an INJURY. From hence it appears, that a person is guilty of no treachery, who uses unfounded or fictitious motives to console a friend in distress, as Arria did to Paetus upon the death of his son, of which there is an account in Pliny's Epistles, or in a general, who in a perilous situation should avail himself of false intelligence, to encourage his troops, by which perhaps a victory might be gained. It may be observed likewise, that the injury done to the freedom of judgment is, in such a case, of less consequence, because it is but momentary, and the real fact is soon discovered. XV. There is a fourth case, which bears a near affinity to those above mentioned, and that is, when any one, possessing pre-eminent authority, orders another, in a subordinate capacity, to execute some device or stratagem, conducive either to his individual, or to the public welfare. Which Plato seems to have had particularly in view, in allowing those in authority to avail themselves of pretexts, or stratagems. The same writer is very correct in his notion of not making such a device a characteristic of that authority, which belongs to the supreme being. For all such devices, however justifiable they may be in CERTAIN CASES, strongly betray that imperfection, which is inseparable from all human systems. The stratagem, which Joseph employed to obtain further discoveries without making himself known to his brethren, is much commended by Philo, as a mark of great policy, when, contrary to the convictions and feelings of his own mind, he accused them of being spies, and afterwards charged them with theft. It was by a stratagem of the same kind, that Solomon gave proof of his inspired wisdom, when he used the FICTITIOUS threat of dividing the living child in order to discover the real mother. XVI. The fifth case, which allows a stratagem to be practised, is that, where it may be the ONLY means of saving the life of an innocent person, of obtaining some object of equal importance, or of diverting another from the perpetration of some horrid design. The heathen poet has given a beautiful illustration of this in his praises of Hypermnestra, whose conduct he calls "a splendid stratagem, ennobling the virgin to all posterity."