What Is a Human Being? -- "Self" Doubt -- The Personality Contest -- It's Only Words -- A Path Forward -- The Secret of Life -- Bodies -- The Duality of Biological Existence -- It Took Nerve -- Vertebrates and Their Nervous Systems -- Romer's Rendition -- Viscerology -- The Behavioral Thoroughfare -- Internalizing the External World -- What Is Cognition? -- Mental Models -- Model-Based Cognition in Evolution -- Foraging in the Mind -- The Cognitive Brain -- Is Consciousness Mysterious? -- Kinds of Consciousness -- Making Consciousness Meaningful -- Fact-Knowing and Self-Knowing Consciousness -- Non-Knowing Consciousness -- What Consciousness Might Be Like in Other Animals -- Stories We Tell Ourselves, and Others.