What is the central idea of the first paragraph of on war by James Boswell?

In the first paragraph of "On War" by James Boswell, the central idea revolves around the inherent nature of war and its impact on humanity. Boswell reflects on the complexities and moral dilemmas associated with conflict, suggesting that war is a fundamental aspect of human existence that influences both individual lives and society at large. This sets the stage for a deeper exploration of the philosophical and ethical dimensions of war throughout the text.