T 3.2.11.3

There is a maxim very current in the world, which few politicians are willing to avow, but which has been authoriz'd by the practice of all ages, that there is a system of morals calculated for princes, much more free than that which ought to govern private persons. 'Tis evident this is not to be understood of the lesser extent of public duties and obligations; nor will any one be so extravagant as to assert, that the most solemn treaties ought to have no force among princes. For as princes do actually form treaties among themselves, they must propose some advantage from the execution of them; and the prospect of such advantage for the future must engage them to perform their part, and must establish that law of nature. The meaning, therefore, of this political maxim is, that tho' the morality of princes has the same extent, yet it has not the same force as that of private persons, and may lawfully be transgress'd from a more trivial motive. However shocking such a proposition may appear to certain philosophers, 'twill be easy to defend it upon those principles, by which we have accounted for the origin of justice and equity.