This book is a study of the ancient Greek philosopher Boethus of Sidon, who lived in the 4th century BC. It explores his life and works, including his philosophical writings on topics such as logic, metaphysics, ethics, and politics.
From Wikipedia
Boethus of Sidon was a Peripatetic philosopher from Sidon, who lived towards the end of the 1st century BC. None of his work has been preserved and the complete collection of quotings and paraphrases appeared first in 2020.