The book "What is Reality? A Modern Explanation of Holy Trinity" offers an in-depth analysis of the concept of reality, divided into three interconnected but distinct areas: physical, intellectual, and spiritual reality. The author, Anthony Williams, explores how these three dimensions interact and why a balance between them is necessary to lead a life in harmony with divine will. The opening of the book addresses the provocative question raised by Time Magazine in 1968: "Is God dead?" and provides a clear answer. Through personal experiences and reflections on influential figures like Steve Jobs, the universal relevance of the discussed topics is emphasized. The book also highlights the impact of evil on the various realities and offers a comprehensive perspective on the relationship between God and humanity.