Roger Scruton is Visiting Professor at Birkbeck College, University of London. His books include Spinoza, Sexual Desire, and Modern Philosophy, along with several works of fiction.Peter Singer is DeCamp Professor of Bioethics at Princeton University. He is best known for his book Animal Liberation, sometimes called 'the Bible of the modern animal movement'. His other books include Practical Ethics, Hegel, How Are We to Live?, Ethics into Action and A Darwinian Left? He is also the author of the major article on ethics in the current edition of the Encyclopaedia Britannica.Christopher Janaway is Senior Lecturer in Philosophy at Birkbeck College, University of London, and author of Self and World in Schopenhauer's Philosophy (1989) and Images of Excellence: Plato's Critique of the Arts (1995).Michael Tanner is a Fellow of Corpus Christi College and a University Lecturer in Philosophy at Cambridge. His publications include A Critical History of Opera (forthcoming) and Wagner (1995).

Review from previous edition Roger Scruton on Kant:'Roger Scruton faced perhaps the most intractable task of all in giving an elementary account of Kant's philosophy ... but he does it extremely elegantly and neatly.'

• KANT; HEGEL; SCHOPENHAUER; NIETZSCHE