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You know, it's dirty business doing one's duty... but just occasionally it's a real pleasure.
— Col. Tavington ‧ The Patriot
Behind the line May contain spoilers.
Our reading
An editorial interpretation.
Duty is described as grubby work, but the speaker admits that now and then it's actually enjoyable. The line has a chilling edge because the pleasure comes from doing something unpleasant. It reads as a cold, self-satisfied confession about taking relish in an obligation.
Context reviewed