Excerpt from An Essay on the Nature and Conduct of the Passions and Affections The historically interesting works reprinted in this series helped to prepare the way for the science of psychology. Most of these books are long for gotten, but their relevance to the field is unmistak able. Many of the writings on mental and moral philosophy, published before the dawn of scientific procedures, have much to commend them to pres ent-day scholars. These books serve as groundwork for a fuller account of the background from which the field emerged, and they should be attractive to students who seek in the past for hints of the future direction that certain types of research can take. Each work will have an Introduction stating the provenance and significance of the book and will add appropriate biographical information. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.