Three Guineas is Virginia Woolf's fierce, formally inventive 1938 polemic against war, patriarchy, and the institutions that sustain both. Cast as a response to letters requesting support for anti-war and educational causes, the book blends essay, epistolary argument, satire, documentary evidence, and moral philosophy. Its style is lucid yet disruptive, moving from irony to indignation as Woolf links fascism abroad with gendered tyranny at home. In the context of interwar modernism, it extends the experimental intelligence of A Room of One's Own into explicitly political territory. Woolf wrote from within, and against, the privileges of England's educated classes. As a woman denied the same university training as her male relatives, and as a writer alert to the exclusions embedded in law, property, education, and professional life, she understood how public violence grows from private hierarchies. The shadow of the coming Second World War gives the book its urgency. This is essential reading for those interested in feminism, pacifism, modernist prose, or the ethical responsibilities of intellectual life. Demanding, witty, and unsettling, Three Guineas remains a profound challenge to complacent liberalism and inherited power.