C. Terry Warner is an acclaimed American philosopher and leadership expert whose work on self-deception and mindset change has transformed organizations worldwide. He holds a PhD from Yale University and was a longtime professor of philosophy at Brigham Young University, serving as department chair and dean.

Warner founded the Arbinger Institute in 1979, pioneering an innovative approach to leadership development and conflict resolution based on over 45 years of research into the psychology of human behavior and motivation.

The Arbinger Institute's first book, the international bestseller "Leadership and Self-Deception," introduced Warner's groundbreaking philosophy of seeing people as people rather than objects. This formed the basis for subsequent works like "The Anatomy of Peace" and "The Outward Mindset," which have been translated into over 30 languages and helped transform organizational cultures across industries worldwide.

Warner's unique focus on changing one's underlying mindset, rather than just behaviors, has made the Arbinger Institute a go-to resource for Fortune 500 companies seeking lasting improvements in leadership, teamwork and results.
A thought-provoking speaker and facilitator, Warner has guided leaders and teams at all levels to overcome self-deception and develop an "outward mindset" focused on the needs of others. Now professor emeritus, he resides in Utah while the Arbinger Institute continues expanding its global impact.