In Patrick O'Brian's "Desolation Island," Jack expresses his incredulity at the notion that peace could pose a threat. His dramatic exclamation highlights the irony of fearing tranquility, suggesting that the chaos and conflict often associated with war might be preferable to an unsettling peace. Through Jack's reaction, the author explores deeper themes of human nature and the complexities of desire for stability versus the reality of conflict.

The conversation reflects a critical moment where characters grapple with the implications of peace and its consequences. Jack's concern illustrates a common concern in literature, where the pursuit of peace could be seen as a double-edged sword, leading to unexpected challenges and moral dilemmas. The narrative invites readers to question their own perceptions of peace and danger, underscoring the fragile balance between war and peace in society.