People
Inside where nothing shows, I am the essence of a man spinning double-headed coins, and betting against himself in private atonement for an unremembered past.
— Tom Stoppard · Rosencrantz & Guildenstern Are Dead

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker describes an unseen inner life through rigged coins and bets made against himself. That private self-defeat becomes a form of penance for a past he cannot remember. The image joins certainty of loss with uncertainty of guilt, making the inward punishment seem painfully unresolved.
Context reviewed