First published in 1953, this volume collects in one place a number of works by the mathematician and philosopher Alfred North Whitehead (1861-1947). The works included in this anthology were selected by F. S. C. Northrop and Mason W. Gross, who omitted only the major early works which were readily available elsewhere. For each selection, an introduction has been supplied by Dr Gross, and a glossary illuminating Whitehead's unique terminology has been appended to the end of the volume. This book will be as an indispensable resource for anyone wishing to research the enduring ideas and philosophy of A. N. Whitehead.