As AI transforms our societies, the need for accessible and inclusive AI literacy has never been greater. LIBRA.I. is an EU-funded project designed to empower libraries to become key actors in promoting public understanding of AI. This lecture elaborates on the project's mission and explores the ethical and social dimensions of AI. Libraries are uniquely positioned to play a crucial role in the digital world, offering trusted spaces for learning and dialogue. By equipping librarians with tools and resources to engage their communities, LIBRA.I. fosters critical thinking, digital skills, and awareness of AI's impact on everyday life. The lecture invites educators, policymakers, and cultural institutions to see libraries not just as repositories of knowledge but as guides for citizens navigating the evolving digital world.