Scilurus on his death-bed, being about to leave four-score sons surviving, offered a bundle of darts to each of them, and bade them break them. When all refused, drawing out one by one, he easily broke them, thus teaching them that if they held together, they would continue strong; but if they fell out and were divided, they would become weak.
Plutarch, William Watson Goodwin (1874). “Plutarch's Morals”, p.190