"Ether Against Pain" is a famous book by the German writer Johann Friedrich Dieffenbach, where the author explores the relationship between ether and pain. The book explores the philosophical, scientific and medical aspects of the subject, looking at possible ways of using the ether to alleviate suffering. Dieffenbach uses his knowledge of chemistry, physiology, and spirituality to prove that ether can be an effective tool in the fight against pain. This book is an interesting and important work for both medical professionals and the general public, as it offers a new perspective on pain management and the use of ether in medical practice.