Why Philosophy?.- Experience and its Disturbances.- Toward a Husserlian Phenomenology of the Initial Stages of Schizophrenia.- Concepts of Intentionality and Their Application to the Psychopathology of Schizophrenia—A Critique of the Vulnerability-Model.- Kant on Schizophrenia.- Are Psychotic Illnesses Category Disorders?—Proposal for a New Understanding and Classification of the Major Forms of Mental Illness.- Rationality and Self.- The Irrelevance of Rationality in Adaptive Behavior.- Limits of Irrationality.- Technical Problems with Teleological Explanation in Psychopathology: Sigmund Freud as a Case in Point.- Self-Consciousness, I-Structures, and Physiology.- When the Self Becomes Alien to Itself: Psychopathology and the Self Recursive Loop.- Perception, Thought, and Schizophrenia.- Verbal Hallucinations and Preconscious Mentality.- Schizophrenia and the Quantification of Semantic Phenomena: How Can Something Mean Something?.- Why Thinking is Easy.- On the Development of Categories.- Normality and Mental Illness—Dimensions Versus Categories: Methodological Considerations and Experimental Findings.- Relevance of Transcendental Philosophy to the Foundations of Psychopathology.- Final Comments and Reflections.- Synopsis and Critical Remarks.- Name Index.