I am more of a soldier than a spy.

Captain America: The Winter Soldier Audio Commentary:

“It’s almost fiercer than shooting the maid the way he treats Bucky in this scene and slapping him across the face. You get a real understanding that he is the handler. The way that he does ‘carrot and stick’ with the Winter Soldier in this scene is kind of heartbreaking. It also gives you an idea of what Bucky’s been through for the past 70 years. Just wipe, kill, wipe, kill. You feel the pain of this tortured soul.”