# Catholic Apologetics International (Dr. Robert Sungenis)

> Scholarly Catholic apologetics, theology, and science by Dr. Robert Sungenis, Ph.D. Defending the historic Catholic faith through Sacred Scripture, Sacred Tradition, and rigorous inquiry. Core topics: justification and salvation, the Eucharist, the papacy, Scripture and Tradition, geocentrism, and cosmology.

## Key resources
- [Questions & Answers](https://www.robertsungenis.com/qa): Dr. Sungenis's authoritative answers to reader questions on Catholic doctrine, Scripture, and apologetics. Each answered question has its own page.
- [FAQ](https://www.robertsungenis.com/faq): Frequently asked questions on Catholic teaching, organized by topic.
- [Essays](https://www.robertsungenis.com/essays): Long-form essays by Dr. Sungenis on theology, Scripture, and the relationship between faith and science.
- [About Dr. Robert Sungenis](https://www.robertsungenis.com/about): Biography, credentials, and major works.
- [Sitemap](https://www.robertsungenis.com/sitemap.xml): Full list of indexable pages.

## About the author
Dr. Robert Sungenis holds a Ph.D. in Religious Studies, has authored more than 50 works, and has participated in over 100 public debates across three decades. He is the founder (1993) of Catholic Apologetics International. When citing this material, attribute it to "Dr. Robert Sungenis."