And there, at the kynges court, my brother,
Ech man for himself, ther is noon oother.

– Geoffrey Chaucer

The Canterbury Tales, The Knight’s Tale. Arcite tells his "brother" Palamon that in the king’s court, where they have been condemned to life imprisonment, it is futile for them to be both arguing over the love of Emily. It is each man for himself, he says to his brother-in-arms.