They talk of a man betraying his country, his friends, his sweetheart. There must be a moral bond first. All a man can betray is his conscience.
Joseph Conrad (2015). “Under Western Eyes (Unabridged Deluxe Edition): An Intriguing Tale of Espionage and Betrayal in Czarist Russia From the Renowned Author of Heart of Darkness, Nostromo & The Secret Agent (Including Author’s Memoirs, Letters & Critical Essays)”, p.29, e-artnow