William McDougall 
Energies of Men (Psychology Revivals) [PDF ebook] 
A Study of the Fundamentals of Dynamic Psychology

First published in 1932, the original blurb states: "This is a simplified condensation of the author’s two volumes, An Outline of Psychology and An Outline of Abnormal Psychology, which together give a comprehensive survey of the principles and findings of modern psychology. This is designed as an introduction to the scientific study of man and society for those who have not time or inclination to pursue the more recondite problems of mind. It is suitable for college use in the introductory course. It concentrates on the dynamics of the human organism and aims to give the student that minimum acquaintance with psychology without which he is not fitted to be a citizen of the modern world." Today it can be read and enjoyed in its historical context.