The Principles of Psychology - Volume I.

Focusing on the foundational aspects of psychology, this comprehensive work explores the data, inductions, and synthesis within the field. Herbert Spencer, a significant intellectual of the 19th century, contributed to sociology and philosophy, and is known for coining terms like "Evolution" and "Survival of the fittest." His theories, particularly "Social Darwinism," drew parallels between organic evolution and societal development, influencing many contemporary thinkers despite lacking the theoretical depth of Darwin's work. The book is republished with a new introductory biography.