The novel of ideas is an important form that is both under-theorised and largely neglected in accounts of the development of the novel in the twentieth and twenty-first centuries. This book sets out the history of this critical hostility, which took hold as the aesthetic protocols of literary modernism became established among key literary tastemakers in Britain. It then proposes a revaluation and a critical reclamation of the novel of ideas, showcasing a range of perceptive, sympathetic, and sensitive ways of reading novels in which discursive argumentation is foregrounded and where the clash of ideas is vital to the novelistic effect. Through thematic chapters as well as new accounts of key novelists in the British tradition-including George Eliot, H. G. Wells, Doris Lessing and Kamila Shamsie-this book repositions the novel of ideas as a major form in modern British literature.