Acknowledgements The approach to Lacan adopted in this book owes a great deal to the work of Jacques-Alain Miller. He has clarified and explained what is often difficult and apparently obscure, and he has stressed the historical consideration of the development of Lacan's thought. I wish to thank Anne Dunand, Richard Klein and Genevieve Morel for their comments and suggestions on my draft and Bernard Burgoyne whose comments on negative hallucination and on "Encore" I have used in the text. I am very grateful to Silvia Elena Tendlarz for the picture reproduced on page 13, which is taken from her thesis "Le cas Aimee: Etude historique et structurale", University of Paris VIII, 1989. Darian Leader

Judy Groves would like to thank Naomi Lobbenberg, Joanna and Max Peters, Maya Magoga-Aranovich, David King, Howard Selina, Howard Peters, Peter Groves and Claudine Meissner for their invaluable help in the production of this book.

Darian Leader is a psychoanalyst practising in London. He is the author of Why Do Women Write More Letters Than They Post? (1996), Promises Lovers Make When It Gets Late (1998), Freud's Footnotes (2000) and Stealing the Mona Lisa: What Art Stops Us From Seeing (2002), all published by Faber & Faber.

Judy Groves is a painter, graphic designer and illustrator. She has also illustrated Philosophy, Christianity, Wittgenstein, Plato, Levi-Strauss and Chomsky in this series.

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