With the duty relating to the property of others, are connected as corollaries, the duties relating to the observance of agreements or contracts; the transmission of property in society being not always done from hand to hand, but by means of promises and writings. To fail in keeping one's promise, to pervert the sense of solemn contracts, is, on the one side, to appropriate other people's property, and on the other, to lie and deceive, and thus to fail in a double duty. 3. _Duties relating to the families of others._--We have seen above what are the duties of man in his family; there remains to be said a few words touching the duties towards the families of others. One may fail in these duties either by violating the conjugal bond, which is _adultery_; or by carrying off other people's children, which is _abduction_, or by depraving them through bad advice or bad examples, which is _corruption_. 4. _Duties relating to the honor of others._--One may fail in these duties, either by saying to a man (who does not deserve it), wounding and rude things to his face, which are _insults_, or in speaking ill of others; and here we distinguish two degrees: if what is said is true, it is _backbiting_; if what is said is false and an invention, it is _slander_. In general one must not too easily ascribe evil to other men; this kind of defect is what is called _rash judgments_. The _positive_ duty respecting other people's reputation is to be just towards every one, even towards one's enemies; to speak well of them if they deserve it, and even of those who speak ill of us. It is a duty to entertain a kindly disposition towards men in general, provided this does not go so far as to wink at wrong. In our relations with our neighbors, usage of the world has, in order to avoid quarrels and insults, introduced what is called _politeness_, which, for being a worldly virtue, is not the less a necessary virtue in the order of society.