1885. Part One of Two. British philosopher and sociologist, Herbert Spencer was a major figure in the intellectual life of the Victorian era. He was one of the principal proponents of evolutionary theory in the mid nineteenth century, and his reputation at the time rivaled that of Charles Darwin. The Principles of Psychology was an important and original work, a real milestone in the history of the subject, marking its transition from a heavily epistemological phase to one in which it was closely dependent on physiology. The Contents of Volume I. are divided into the following parts: The Data of Psychology; The Inductions of Psychology; General Synthesis; Special Synthesis; and Physical Synthesis. See other titles by this author available from Kessinger Publishing. Other volumes in this set are ISBN(s): 141794823X.