COMPROMISE, n. Such an adjustment of conflicting interests as gives each adversary the satisfaction of thinking he has got what he ought not to have, and is deprived of nothing except what was justly his due.

Ambrose Bierce (1842-1914?) American writer and journalist

“Compromise,” The Cynic’s Word Book (1906)
    (Source)

Included in The Devil's Dictionary (1911). Originally published in the "Devil's Dictionary" column in the San Francisco Wasp (1881-08-12).