"Smile of Eternity" is an exciting fantasy book written by the famous author Frederic Paul. This novel tells the story of a talented inventor who finds a way to use the infamous to travel through time. However, what will happen when the inventor is dragged back in time to an era when humanity was not yet ready for such technologies? Will he be able to change the dangerous course of events and influence the future? This book will captivate you from the first pages with its tense plot line, unexpected turns of events and philosophical reflections on the essence of time and human destiny. "The Smile of Eternity" is a masterpiece at the intersection of science fiction and philosophical literature, which will leave you thinking about many aspects of life and existence.