Rosa Luxemburg is one of the most extraordinary women in the political history of Germany. The socialism she advocates is humanism, democracy, and freedom – a sentiment she expresses to Lenin among others. For her firm stance against militarism, she spends years in prison. She advocates for absolute non-violence in the struggle for a solidarity-based society and is ultimately brutally murdered. This volume not only presents her most important theoretical texts, but the excerpts from her letters also portray her multifaceted personality, her empathy for all living beings, and her insatiable thirst for life.