The question “What is Philosophy?” is itself a central inquiry in the study of philosophy. Some view philosophy as an analytical study of concepts; others view it more etymologically as a search for wisdom; and others view it as speculation upon the principles governing human nature and destiny. Philosophy thus includes the study of logical thinking, the practice of rational investigation and understanding, the utilization of holistic imagination, and the application of practical wisdom. In short, philosophy is essentially a rational, synoptic, and practical discipline.

The Philosophy Department at USD is pluralistic, covering all significant historical periods and most major philosophical methods. The USD Philosophy Department has a deep and special concern for the study of ethics, values, and the moral life. Additionally, Philosophy students at USD can expect to be exposed to perennial epistemological, metaphysical, and theological issues and theories in philosophy–both as these are discussed in the classical texts of great philosophers but also in their contemporary treatment.