In "Terrible Swift Sword," Bruce Catton discusses the core principle of successful strategy, which revolves around influencing opponents to adopt one's perspective on circumstances. This ability to shape their understanding can turn the tide in conflicts or confrontations, ultimately giving a strategic advantage. It emphasizes the importance of perception in competitive scenarios.

Catton's insight highlights that a well-executed strategy is not just about physical tactics but also about psychological maneuvers. By compelling opponents to see a situation through one's lens, a strategist can create openings and opportunities that might not otherwise exist, reinforcing the importance of narrative and framing in achieving victory.