"Fundamental Philosophy, Volume I" is the first part of a huge philosophical work by the Spanish thinker Jaime Luciano Balmes. In this book, the author examines the main issues of philosophy, paying attention to such topics as human nature, the role of religion in society, issues of morality and justice. Balmes argues his views in detail, using logical reasoning and philosophical concepts. This book is not only an important philosophical work, but also an invitation to study the fundamental principles underlying human existence and social order.