Contributors

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  Kathleen Milani

  Questioning Belief Podcast Host, CSLI
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Team Members

Kathleen Milani
Questioning Belief Podcast Host, CSLI
Kathleen Milani, Ph.D, is host of the Questioning Belief podcast. She is a leading Computational Biologist and specializes in cancer research. Kathleen completed her undergraduate studies in Biomedical Engineering at Columbia University, where her academic journey laid the foundation for her career as a scientist. She holds a PhD from Johns Hopkins University and is passionate about medical research. Kathleen is also a dedicated wife and mother to a one-year-old, balancing her professional achievements with the joys of family life.
 
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  N. Gray Sutanto

  Professor and Author
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Team Members

N. Gray Sutanto
Professor and Author
N. Gray Sutanto holds a PhD from the University of Edinburgh and is assistant professor of systematic theology at Reformed Theological Seminary, Washington, D.C. He is the author of God and Knowledge, co-author of Neo-Calvinism: A Theological Introduction, co-editor for Herman Bavinck's Philosophy of Revelation, and author of A Sense of the Divine: An Affective Model of General Revelation from the Reformed Tradition. His research interests include Dutch Reformed theologian Herman Bavinck, humanity and sin, and Christianity and culture, among others.
 
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  Rebecca DeYoung

  Professor
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Team Members

Rebecca DeYoung
Professor
Rebecca DeYoung (Ph.D.) has enjoyed teaching ethics and the history of ancient and medieval philosophy at Calvin College for over 20 years. Her research focuses on the seven deadly sins, and virtue ethics, as well as Thomas Aquinas’s work on the virtues. Her books include Glittering Vices, Vainglory, and a co-authored volume entitled Aquinas’s Ethics. Recent essays about vices and virtues—appear in Virtues and Their Vices, Being Good, and Cambridge Critical Guide to Aquinas’s De Malo, and the journals Res Philosophica, ACPQ, the Thomist, and Faith and Philosophy. Awards for her work include the Book and Essay Prize from the Character Project and the C.S. Lewis prize for Glittering Vices. She speaks widely, including opportunities to teach in prison.
 
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  Barry Wilmore

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Team Members

Barry Wilmore
Barry Wilmore, NASA Astronaut Barry “Butch” Wilmore served 25 years at NASA, is a decorated U.S. Navy captain who has flown numerous tactical aircraft operationally while deploying aboard four aircraft carriers during peacetime and combat operations. A graduate of the U.S. Naval Test Pilot School, he went on to serve as a test pilot before NASA selected him to become an astronaut in 2000. The Tennessee native earned a bachelor’s and a master’s degree in electrical engineering from Tennessee Technological University and a master’s degree in aviation systems from the University of Tennessee.
 
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  Jana Harmon

  Senior Fellow For Christian Apologetics, CSLI
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Team Members

Jana Harmon
Senior Fellow For Christian Apologetics, CSLI
Jana Harmon, Ph.D, is the Senior Fellow For Christian Apologetics for the C.S. Lewis Institute and a Teaching Fellow for C.S. Lewis Institute Atlanta. She serves on the Atlanta Advisory Board and as an Adjunct Professor of Cultural Apologetics at Biola University. Her doctoral research studied the religious conversion of atheists to Christianity looking at the perspectives and stories of 50 former Atheists. She views apologetics through a practical, evangelistic lens. She is the host of the podcast eX-skeptic for the C.S. Lewis Institute. Jana received her PhD from the University of Birmingham, England.
 
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  Stephen Iacoboni

  Oncologist, Speaker & Author
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Team Members

Stephen Iacoboni
Oncologist, Speaker & Author
Stephen Iacoboni, MD, is a veteran oncologist, author, and speaker whose medical career spans more than forty years. Trained during an era dominated by scientific materialism, he once embraced an atheistic worldview. But through decades of walking with cancer patients in their deepest suffering, he rediscovered the reality of the human soul and the hope of faith. He is the author of The Undying Soul: A Cancer Doctor’s Discovery and Telos: The Scientific Basis for a Life of Purpose, where he shares both his personal journey from atheism to faith and his case for meaning and design in life. Today, Dr. Iacoboni continues to write and speak on the intersection of science, medicine, and spirituality, encouraging both doctors and skeptics to see beyond a purely mechanistic view of life.
 
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  C.S. Lewis Institute

  Author
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Team Members

C.S. Lewis Institute
Author
C.S. Lewis Institute, in the legacy of C.S. Lewis, works to develop wholehearted disciples of Jesus Christ who will articulate, defend, share, and live their faith in personal and public life. Founded in 1976 by Dr. James Houston and James R. Hiskey, the Institute provides leading teachers who address important issues of the day from the perspective of Biblical orthodoxy, while also providing discipleship for individuals in small groups.
 
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  Thiago M. Silva

  City Director, CSLI Lake Charles
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Team Members

Thiago M. Silva
City Director, CSLI Lake Charles
Thiago M. Silva, D.Min., is the City Director for the C. S. Lewis Institute Lake Charles. He has been the pastor of Bethel Presbyterian Church (PCA) in Lake Charles, Louisiana, since August 2022. He earned his Th.M. in Systematic Theology from Calvin Theological Seminary (2016) and completed his doctoral studies at Puritan Reformed Theological Seminary (2024). He’s authored several articles and books including Discipleship in a Post-Christian Age: With a Little Help from C. S. Lewis (Wipf & Stock, 2025). Thiago’s God-given vocation is to equip people to live as Christians in every sphere of life through teaching and preaching.
 
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  Chris Sicks

  Pastor
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Team Members

Chris Sicks
PastorChris Sicks is pastor of One Voice Fellowship in Northern Virginia. He previously served on staff at Alexandria Presbyterian Church in Virginia for 20 years. He is a graduate of Reformed Theological Seminary and the author of Tangible: Making God Known through Deeds of Mercy and Words of Truth. He is founder and board president of For the Nations DC, offering English classes to refugees and immigrants four days a week, to help our new neighbors acclimate and discover the truth and love of Jesus. He’s been a newspaper editor, restaurant manager, and Army officer.  
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  Andy Bannister

  Author and Speaker
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Team Members

Andy Bannister
Author and Speaker
Andy Bannister is an author, speaker, and broadcaster. He is currently the Director of the Solas Center for Public Christianity, an evangelism and training ministry, as well as the Adjunct Research Fellow at Arthur Jeffery Centre for the Study of Islam at Melbourne School of Theology. He holds a PhD in Islamic Studies and has taught extensively at universities across the world on both Islam and Philosophy. Andy speaks regularly on Christianity to audiences of all faiths across Europe, Canada, the US, and further afield. He is an author of several books including: The Atheist Who Didn't Exist, Do Muslims and Christians Worship the Same God? and most recently, How to Talk About Jesus Without Looking Like an Idiot.
 
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  Caleb Ball

  Podcast Guest
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Team Members

Caleb Ball
Podcast Guest
Caleb Ball is a former atheist turned passionate Christian communicator. Once a vocal critic of Christianity, known online as “Crazy Caleb” during his atheist YouTube years, he now uses his platform to share testimonies of skeptics who found faith in Jesus. Through his YouTube channel Aspiring Christian, he curates conversion stories and apologetics content to help others wrestle honestly with life’s biggest questions. Caleb holds a degree in history and is pursuing a Master’s in Biblical Studies at Colorado Christian University. He and his wife live in Montana, where they are active in their local church and community.