The present volume brings together fifteen original essays by experts in philosophy and linguistics. These specially written chapters draw on themes from the work of Dorothy Edgington, the first woman to hold a chair in philosophy at the University of Oxford. The contributors focus on the key topics to which Edgington has made many important contributions, including conditionals, vagueness, the paradox of knowability, and probability. Their insights will be of interest to philosophers, linguists, and psychologists working in philosophical logic, natural language semantics, and reasoning.