About the Author
A. J. Ayer was also Wykeham Professor of Logic at Oxford University. His many distinguished books include Language, Truth and Logic, The Problems of Knowledge, The Concept of a Person and Other Essays, and works on Bertrand Russell and Thomas Paine.
Jane O'Grady studied Philosophy at University College, London. After teaching for some years she worked as a literary journalist, columnist and short-story writer. She has published a book of short stories and articles entitled Obsessions.