Espionage Tools Quotes

“In every operation there is an above the line and a below the line. Above the line is what you do by the book. Below the line is how you do the job.”
― John le Carré, A Perfect Spy

“He could hear Matthews saying, 'Worry before, and you'll be prepared. Worry afterwards and you'll keep your feet on the ground. But don't worry during action; that's fatal.”
― Helen MacInnes, Assignment in Brittany