The author and publishers would like to thank the following, who have kindly given permission for the use of pictorial copyright material (names in brackets indicate the subjects of photographs):
Press Association, pp. 13 (Mary Wollstonecraft), 14 (Betty Friedan), 27 (John Stuart Mill), 36 (Thomas Hobbes), 40 (Edmund Burke), 67 (Karl Marx), 102 (Pierre-Joseph Proudhon), 113 (Jean-Jacques Rousseau), 121 (Johann Gottfried Herder), 142 (Kate Millett), 151 (Simone de Beauvoir), 196 (Isaiah Berlin); Getty Images, pp. 30 (John Rawls), 54 (Robert Nozick), 72 (Friedrich Engels), 131 (Charles Maurras), 150 (Sheila Rowbotham), 154 (bell hooks), 178 (Aldo Leopold); Alamy, pp. 17 (John Locke), 52 (Ayn Rand), 68 (Beatrice Webb), 76 (Rosa Luxemburg), 84 (Anthony Crosland), 96 (Emma Goldman), 97 (Mikhail Bakunin), 104 (Peter Kropotkin), 107 (Max Stirner), 125 (Giuseppe Mazzini), 149 (Charlotte Perkins Gilman), 159 (Rachel Carson), 167 (Ernst Friedrich Schumacher), 191 (Charles Taylor); LSE Archive, p. 37 (Michael Oakeshott); LSE/Nigel Stead, p. 87 (Anthony Giddens); Library of Congress, p. 122 (Marcus Garvey); Janet Biehl, p. 175 (Murray Bookchin); Peg Scorpinski, p. 176 (Caroline Merchant); Will Kymlicka, p. 190; Tariq Modood, p. 194; Bhiku Parekh, p. 197.
Every effort has been made to contact all copyright holders, but if any have inadvertently been omitted the publishers will be pleased to make the necessary arrangement at the earliest opportunity.