They loved their wives, and were beloved by them. Their entire attention was directed to educating their children in the ways of virtue; the miseries of their fellow countrymen were constantly represented to them and held up as the sorriest of examples. Above all, they were taught that individual interest is always bound to the common interest, that to try to separate them was to invite ruin, that virtue is not something costly to achieve nor painful to exercise, and that justice for others is a blessing for ourselves.
They soon had the consolation of virtuous fathers, seeing their children develop in their image.

[Ils aimoient leurs femmes, et ils en étoient tendrement chéris. Toute leur attention étoit d’élever leurs enfants à la vertu. Ils leur représentoient sans cesse les malheurs de leurs compatriotes, et leur mettoient devant les yeux cet exemple si touchant ; ils leur faisoient surtout sentir que l’intérêt des particuliers se trouve toujours dans l’intérêt commun ; que vouloir s’en séparer, c’est vouloir se perdre ; que la vertu n’est point une chose qui doive nous coûter ; qu’il ne faut point la regarder comme un exercice pénible ; et que la justice pour autrui est une charité pour nous.
Ils eurent bientôt la consolation des pères vertueux, qui est d’avoir des enfants qui leur ressemblent.]

Charles-Lewis de Secondat, Baron de Montesquieu (1689-1755) French political philosopher

Persian Letters [Lettres Persanes], Letter 12, Usbek to Mirza (1721) [tr. Healy (1964)]
    (Source)

In the story of the Troglodytes, a tribe who had been decimated by a plague after years of self-interested anarchy where every person did as they wished. The survivors developed a philosophy of mutual aid and community, and prospered.

(Source (French)). Alternate translations:

They lov'd their Wives, and were tenderly belov'd by them. They were wholly intent upon educating their Children to Virtue. They continually represented to them the Calamities of their Countrymen, and often set that moving Example before their Eyes. They above all things instill'd into them this Principle, that every private Man's Interest is inseparable from the Interest of the Community. To divide it, is Ruin. That Virtue is not a thing which should be troublesome to us, nor ought the Exercise of it to give us pain; and that Justice to another, is Charity to our selves.
They had soon the Consolation of virtuous Fathers; which is, to have Children like themselves.
[tr. Ozell (1736)]

They loved their wives, and were affectionately beloved by them. The training up their children to virtue engaged their utmost care. They continually represented to them the miseries of their countrymen, and placed their melancholy example before their eyes. They especially inculcated upon their minds, that the interests of individuals was always to be found in that of the community, and that to attempt to seek it separately was to destroy it; that virtue is by no means a thing that ought to be burdensome to us, nor the practice of it considered as painful; that doing justice to others is acting charitably to ourselves. They soon enjoyed the consolation of virtuous parents, which consists in having children like themselves.
[tr. Floyd (1762)]

They loved their wives, and were beloved most tenderly. Their utmost care was given to the virtuous training of their children. They kept before their young minds the misfortunes of their countrymen, and held them up as a most melancholy example. Above all, they led them to see that the interest of the individual was bound up in that of the community; that to isolate oneself was to court ruin; that the cost of virtue should never be counted, nor the practice of it regarded as troublesome; and that in acting justly by others, we bestow blessings on ourselves.
They soon enjoyed the reward of virtuous parents, which consists in having children like themselves.
[tr. Davidson (1891)]

They loved their wives, and were in turn tenderly beloved by them. Their whole ambition was to rear their children virtuously. They constantly placed before their eyes the misfortunes of their fellow-countrymen, and proved to them by this thrilling example that the interest of the individual is one with the interest of the community; that to attempt to separate them is to court ruin; that virtue is a thing the practice of which ought to be found easy; that we should never regard its cultivation as a painful exercise, and that justice to others is a blessing to ourselves. They had soon the consolation of virtuous fathers, which is to see their children grow up in their likeness.
[tr. Betts (1897)]

They loved their wives, who cherished them tenderly in return; they devoted their whole attention to raising their children in the path of virtue; they told them repeatedly of the misfortunes of their compatriots, and showed them those piteous examples; above all, they made them feel that the interest of the individual is always identical with the common interest, and that to attempt to separate oneself from it is fatal; that we should not find virtue arduous, or regard it as a painful exercise, and that justice to another is a charity to oneself.
Soon they knew the consolation of virtuous fathers, which is to have children like themselves.
[tr. Mauldon (2008)]

They loved their wives, who in turn cherished them. Their great aim was to raise their children in the path of virtue. They constantly told them stories about their compatriots, putting that unhappy example before their eyes. Above all, they stressed that one;s self0--interest is always contained within the common interest, and that to separate those two was to take a step toward ruin; they taught also that virtue need cost us nothing, that we must not regard virtue as a painful burden; finally, they taught that to do justice for one is to do good for all.
In time they enjoyed the consolation of virtuous fathers, which is to have children who resemble them.
[tr. MacKenzie (2014)]