Hesiod. Works and Days. (Lines 342-351).
Call your friend to a feast; but leave your enemy alone; and especially call him who lives near you: for if any mischief happen in the place, neighbours come ungirt, but kinsmen stay to gird themselves (*H9). A bad neighbour is as great a plague as a good one is a great blessing; he who enjoys a good neighbour has a precious possession. Not even an ox would die but for a bad neighbour. Take fair measure from your neighbour and pay him back fairly with the same measure, or better, if you can; so that if you are in need afterwards, you may find him sure.