Here is the book that helped popularize Prolog by making it accessible to a wide range of readers. This edition is an excellent reference for anyone who wants to study and use Prolog. The book concentrates on teaching the "core" Prolog, and all examples conform to this standard and will run on the most widely-used Prolog implementations.
The book explores the concept of significant concerns, which encompass deeply held attitudes, preferences, and values that shape long-term relationships between intelligent entities. These concerns engage emotions and senses, leading to profound experiences of identity and purpose, contrasting with more superficial opinions. The study highlights the emotional depth of significant concerns, including what Emmons refers to as ultimate concerns, emphasizing their transformative potential in human connections and interactions.