no longer just. And should the expediency which is expressed by the law vary and only for a time correspond with the prior conception, nevertheless for the time being it was just, so long as we do not trouble ourselves about empty words, but look simply at the facts. 38. Where without any change in circumstances the conventional laws, when judged by their consequences, were seen not to correspond with the notion of justice, such laws were not really just ; but wherever the laws have ceased to be expedient in consequence of a change in circumstances, in that base the laws were for the time being just when they were expedient for the mutual intercourse of the citizens, and subsequently ceased to be just when they ceased to be expedient. 39.. He who best knew how to meet fear of external foes made into one family all the creatures he could ; and those he could not, he at any rate did not treat as aliens ; and where he found even this impossible, he avoided all intercourse, and, so far as was expedient, kept them at a distance. 40. Those who were best able to provide themselves with the means of security against their neighbours, being thus in possession of the surest guarantee, passed the most agreeable life in each other's society ; and their enjoyment of the fullest intimacy was such that, if one of them died before his time, the survivors did not lament his death as if it called for commiseration.