"Galen of Pergamum on temperaments and imbalance" is an outstanding work of the ancient physician Galen, which is an important work on ancient Greek medicine. In the book, the author explores the concept of human temperaments - sanguine, choleric, phlegmatic and melancholic, proving the importance of maintaining a balance between them for maintaining health. The publication also highlights the issue of imbalances in the body and ways to correct it through proper diet, exercise and medical procedures. This book is an important source for understanding ancient Greek medical thought and its influence on the development of medical practice.