A concise, thought-provoking biography of the Buddha in the Penguin Lives series, written by one of the foremost experts on world religions. A member of the Association of Muslim Social Services in Jerusalem, Karen Armstrong is a former Roman Catholic nun who teaches Judaism. Her many books include: A History of God; Islam, a Short History; and Jerusalem: One City Three Faiths. She has also written a biography of Mohammed.  (REL09, $14.00)