Herbert Spencer's book "The Data of Ethics" is a fundamental work in the field of ethics. The author systematically investigates moral issues, highlighting them from different points of view. Spencer analyzes the nature of moral action and the principles that underlie our ethical beliefs. In the book "The Data of Ethics", the author advocates a rational approach to solving ethical dilemmas. Spencer examines questions of responsibility, justice, and moral standards from the perspective of deduction and data analysis. This work helps the reader to better understand the essence of morality and a person's own place in the world of values. "Ethical data" is not only a philosophical study, but also a call for justified moral actions and responsibility for one's actions. This book will provide the reader with new perspectives on modern ethical problems and will contribute to the development of critical thinking in the field of morality.