This work investigates the philosophical and theological validity of the existence of angels and their relationship to human nature. Mortimer J. Adler, a prominent philosopher and educator, utilizes his background in Aristotelian and Thomistic thought to examine the historical and intellectual foundations of angelic belief. He argues that the concept of angels serves as a necessary bridge between the material world of human experience and the purely spiritual realm of divine intellect.

Scholars and readers often note that Adler applies a rigorous, analytical framework to a subject frequently relegated to mysticism. Experts highlight this as a clear, accessible entry point for those interested in the intersection of classical philosophy and religious doctrine.