: Discusses the human soul, volition, and the perfection of human action as a culmination of natural philosophy. Part II: Philosophy of Science
Wallace shifts to the methodology of discovery, defining science as a form of "probable reasoning" that can eventually arrive at certitude: The Modeling of Nature: Philosophy of Science a...
: Investigates metabolism, sentience, and the inherent "powers" that distinguish living organisms. : Discusses the human soul, volition, and the
This section explores the "internal dimensions" of natural entities, categorized by their complexity: : Discusses the human soul
: Uses cognitive science to explain how human sensation and perception connect the intellect to the physical world.