Ilia Delio is an American theologian, scientist, and writer whose work explores the meeting point between faith, science, and the future of human spirituality. A Franciscan sister and scholar, she is best known for her efforts to bring Christian theology into dialogue with contemporary understandings of evolution, quantum physics, and artificial intelligence. Rather than seeing religion and science as opposed, Delio frames them as two complementary ways of grasping reality, arguing that both point toward an unfolding cosmos rooted in creativity and connection. She has written extensively on figures like Teilhard de Chardin and Francis of Assisi, weaving their insights into a modern vision of God, technology, and planetary consciousness.

Currently the Josephine C. Connelly Endowed Chair in Theology at Villanova University, Delio has published more than 20 books and numerous articles aimed at rethinking theology in light of today’s scientific and cultural shifts. Her writing invites readers into big-picture questions: What does it mean to be human in an era of biotechnology? How can spirituality evolve alongside digital life? And what might a God of an expanding universe look like? With a style that bridges scholarship and accessibility, Delio has become a leading voice in constructive theology, known for her hopeful and imaginative approach to the spiritual challenges of the 21st century.