Voltaire's quote from "Candide" reflects a critical view of optimism, suggesting it can often serve as a delusion that masks the reality of a flawed world. He indicates that an overly positive perspective might ignore serious issues, leading people to believe that everything is well when, in fact, it is not. This perspective urges a more realistic assessment of circumstances rather than clinging to blind faith in positive outcomes.

In "A Great Improvisation: Franklin, France, and the Birth of America," author Stacy Schiff explores the complexities of optimism, especially in the context of historical events. Schiff likely examines how the ideals of hope and progress can sometimes obscure the challenges and hardships faced during the formation of America. This duality highlights the tension between an optimistic outlook and the recognition of underlying problems that require attention and action.