The book was written while Obama was a U.S. Senator, before his presidency, and serves as both a memoir and a manifesto that outlines his political philosophy and vision for America. It provides valuable context for understanding his subsequent presidential campaigns and administration.

Unlike typical political memoirs, this book combines personal storytelling with substantive policy discussions, maintaining a thoughtful, academic tone while remaining accessible to general readers. Obama's self-deprecating humor and candid reflections set it apart from more conventional political works.

"The Audacity of Hope" refers to the optimistic belief that positive change is possible in American politics and society, despite significant challenges and divisions. The phrase encapsulates Obama's core message that hope, combined with practical action, can lead to meaningful social and political progress.