The Quintessence of Irving Langmuir is a biography on the life of Irving Langmuir. The book was created to complement the volume entitled "The Collected Works of Irving Langmuir. This selection was created to introduce the person and his works. Special attention has been given to Langmuir’s early life and family background. The text begins with an account of the person’s child seen from the mother’s perspective. Such an account was taken from the family’s documents. These documents are in the form of letters, diaries, photograph albums, newspaper clippings, and genealogical studies. A brief history about the formation of General Electric Company is also covered. A great part of the book relates the life of Langmuir as a father and as a scientist. Among his inventions is using dry ice for cloud seeding. One of his greatest achievements is receiving a Nobel Prize in Chemistry. The book is directed to the general public.