A compact collection of landmark addresses and prose that trace a leader’s political and moral development during the nation’s gravest crisis, offering speeches and writings that argue for union and liberty, confront the moral and legal questions of slavery, and balance urgent moral appeal with careful constitutional reasoning. The pieces reveal a progression from trenchant political analysis to wartime statesmanship, showcasing powerful, concise rhetoric and an enduring commitment to national unity, human equality, and the rule of law.