The review discusses Charles Darwin's "The Descent of Man, and Selection in Relation to Sex," noting its popularity and its role in educating laymen. While Darwin's work is praised for its factual accuracy and logical reasoning, the reviewer argues that it does not significantly enhance his reputation. The text explores the intersection of mental and physical phenomena, emphasizing the need for interdisciplinary understanding. The reviewer criticizes the lack of precision in anthropological speculation, citing examples like the Duke of Argyll's flawed views. The review also addresses the theory of natural selection and its application to human morality, highlighting the complexity of moral development and the role of social instincts. The reviewer points out inconsistencies in Darwin's argument, particularly regarding the distinction between general good and happiness. The text also discusses the limitations of natural selection in explaining human intelligence and morality, and the need for a superior intelligence. The review concludes that while Darwin's work is influential, it has significant shortcomings in its application to human ethics. The review also touches on other works, such as those by Wallace and Mivart, and the broader implications of evolutionary theory for human morality and society. The reviewer emphasizes the importance of intellectual development and the need for a balanced approach to understanding human evolution and morality.The review discusses Charles Darwin's "The Descent of Man, and Selection in Relation to Sex," noting its popularity and its role in educating laymen. While Darwin's work is praised for its factual accuracy and logical reasoning, the reviewer argues that it does not significantly enhance his reputation. The text explores the intersection of mental and physical phenomena, emphasizing the need for interdisciplinary understanding. The reviewer criticizes the lack of precision in anthropological speculation, citing examples like the Duke of Argyll's flawed views. The review also addresses the theory of natural selection and its application to human morality, highlighting the complexity of moral development and the role of social instincts. The reviewer points out inconsistencies in Darwin's argument, particularly regarding the distinction between general good and happiness. The text also discusses the limitations of natural selection in explaining human intelligence and morality, and the need for a superior intelligence. The review concludes that while Darwin's work is influential, it has significant shortcomings in its application to human ethics. The review also touches on other works, such as those by Wallace and Mivart, and the broader implications of evolutionary theory for human morality and society. The reviewer emphasizes the importance of intellectual development and the need for a balanced approach to understanding human evolution and morality.