"Herbert Spencer" by J. Arthur Thomson is a biographical account written in the early 20th century. This work seeks to illustrate the life, intellect, and scientific contributions of Herbert Spencer, who is best known for his foundational role in the development of the theory of evolution and sociology. The book focuses on Spencer's journey as a thinker, addressing themes such as heredity, nurture, and the evolution of his ideas, as well as how his personal experiences shaped his philosophical outlook. At the start of the book, the author introduces Spencer's ancestry and upbringing, emphasizing the significant influence of his family on his intellectual development. Spencer is depicted as a product of a nonconformist lineage, and the narrative delves into the details of his childhood, highlighting both the nurturing environment created by his parents and the constraints imposed by his father’s ill health. The early chapters reflect on his formative years, his aversion to conventional education, and the encouragement he received in natural sciences, which laid the foundation for his later work in philosophy and science. As the opening unfolds, readers get a glimpse into how Spencer's early life experiences shaped his thoughts on the unity of science and the evolution of life, setting the stage for his later philosophical endeavors. (This is an automatically generated summary.)