The 48 Laws of Power by Robert Greene and Joost Elffers

Law 22 

Use the Surrender Tactic: Transform Weakness into Power

When you are weaker, never fight for honor's sake; choose surrender instead.  Surrender gives you time to recover, time to torment and irritate your conqueror, time to wait for his power to wane.  Do not give him the satisfaction of fighting and defeating you – surrender first.  By turning the other check you infuriate and unsettle him.  Make surrender a tool of power.