Hempel (1905-1997) was one of the most influential philosophers of science in the 20th century, along with Thomas Kuhn and Sir Karl Popper. His work defined the central problems of the field and its proper methods of investigation. By presenting an analytical and historical introduction and a comprehensive bibliography together with a selection of many of Carl G. Hempel's most important studies, this volume provides an ideal opportunity for students and scholars to appreciate the enduring contributions of one of the most important philosophers of science of the 20th century.