Shakespeare on Loss Aversion as a Goad to Action

Were't not a shame, that whilst you live at jar,
The fearful French, whom you late vanquished, 
Should make a start o'er seas and vanquish you?
Methinks already in this civil broil
I see them lording it in London streets,
Crying 'Villiago!' unto all they meet.
Better ten thousand base-born Cades miscarry
Than you should stoop unto a Frenchman's mercy.
To France, to France, and get what you have lost;
Spare England, for it is your native coast;
Henry hath money, you are strong and manly;
God on our side, doubt not of victory.

(History of Henry VI, Part II, Act 4, Scene 8, Lines 2799-2810)