Aesop's Fables (1884)
138. The Father and his Sons.
A Father had a family of sons who were perpetually quarreling among themselves. When he failed to heal their disputes by his exhortations, he one day told them to bring him a bundle of sticks. When they had done so, he placed the bundle into the hands of each of them in succession, and ordered them to break it in pieces. They each tried with all their strength, and were not able to do it. He next unclosed the faggot, and took the sticks, separately, one by one, and again put them into their hands, on which they broke them easily. He then addressed them in these words: "My sons, if you are of one mind, and unite to assist each other, you will be as this faggot, uninjured by all attempts of your enemies; but if you are divided among yourselves, you will be broken as easily as these sticks."
Disunited families are easily injured by others.
Aesop's Fables: A New Revised Version From Original Sources (translator not identified), 1884 . Illustrations by Ernest Henry Griset (1844-1907), John Tenniel (1820-1914) and Harrison Weir (1824-1906). Available online at Project Gutenberg.