An extensive and comprehensive study of the lives, philosophies, and teachings of the 35 Doctors of the Church would take thousands of volumes.
However this book is capable to comprise all that in just over 700 pages, or about 20 pages per Doctor, making it a pleasant reading, without missing the essence of the Saints, their theologies, life experiences, and meditations.
Good reference book if you need to go deeper on specific subjects or mystic’s life stories.
A great read for all Christians.