Volume 2 of Samuel Hahnemann: His Life and Work by Richard Haehl offers a comprehensive exploration of the founder of homeopathy through a rich compilation of personal letters, state documents, essays, and other archival materials. This volume serves as a vital supplement to the biographical narrative presented in Volume 1, providing deeper insights into Hahnemann’s intellectual journey and the evolution of his medical philosophy. The documents included shed light on his personal relationships, professional challenges, and the broader historical context of his work. Notably, the volume features Hahnemann’s correspondence with contemporaries, offering a window into the collaborative and often contentious development of homeopathic practice. These letters reveal his dedication to refining his theories and his resilience in the face of skepticism and opposition. The inclusion of state papers and official documents further contextualizes his efforts within the medical and political landscapes of his time. Overall, Volume 2 enriches our understanding of Hahnemann not just as a medical innovator but as a figure deeply engaged with the scientific and social currents of his era.