The essence of the law... Lawbook Co. Nutshells are the essential revision tool: they provide a concise outline of the principles for each of the major subject areas within undergraduate law. Written in clear, straight-forward language, the authors explain the principles, and highlight key cases and legislative provisions for each subject. Nutshell: Legal Theory is aimed primarily at students encountering legal theory for the first time or seeking a concise summary of the area for revision purposes. The third edition contains a new chapter on critical reasoning. Several other parts of the book have been revised and updated to reflect recent developments, including new suggestions for further reading.