The book "Symbolists and Decadence" by Gustav Kahn is an important work on the literary movement of symbolism and decadence. In this study, the author analyzes the aesthetic and philosophical aspects of these two movements, considering their influence on the literature and art of the 19th century. In addition, Kahn illuminates the life path of prominent representatives of symbolism and decadence, exploring their creativity and ideas in detail. This book is an important source for understanding the cultural context of the time and its influence on contemporary literary and artistic practice.