Book excerpt: The nineteenth century is a period of stunning philosophical originality, characterised by radical engagement with the emerging human sciences. Often overshadowed by twentieth century philosophy which sought to reject some of its central tenets, the philosophers of the nineteenth century have re-emerged as profoundly important figures. The Routledge Companion to Nineteenth Century Philosophy is an outstanding survey and assessment of the century as a whole. Divided into seven parts and including thirty chapters written by leading international scholars, the Companion examines and assesses the central topics, themes, and philosophers of the nineteenth century, presenting the first comprehensive picture of the period in a single volume: German Idealism philosophy as political action, including young Hegelians, Marx and Tocqueville philosophy and subjectivity, including Schopenhauer, Kierkegaard and Nietzsche scientific naturalism, including Darwinism, philosophy of race, experimental psychology and Neo-Kantianism utilitarianism and British Idealism American Idealism and Pragmatism new directions in Mind and Logic, including Brentano, Frege and Husserl. The Routledge Companion to Nineteenth Century Philosophy is essential reading for students of philosophy, and for anyone interested in this period in related disciplines such as politics, history, literature and religion.