Philosophical Studies is a landmark philosophical publication by the famous British philosopher George Edward Moore. In this book, the author considers a wide range of issues related to ethics, the theory of knowledge, and the philosophy of language. Moore expresses his unique views on the essence of moral principles, revealing the complex relationships between moral responsibility and the justification of ethical norms. In "Philosophical Investigations" Moore also explores questions about the nature of knowledge and truth, considering different approaches to determining the objectivity of knowledge. The author expresses his own opinions about the concepts of justice and authenticity, which stimulate the reader to a deep understanding of philosophical problems. Philosophical research is not only a significant contribution to philosophy, but also an invitation to view the world through the prism of critical thinking and an attempt to reveal key aspects of deep philosophical thought.