Perennialism is a philosophical theory that argues for the existence of universal truths. It originated in religious thought with Thomas Aquinas and was later developed into secular forms. Perennialism believes that education should impart timeless knowledge through studying great works, remain the same for all people, and focus on developing rational thinking skills. The curriculum emphasizes subjects like philosophy, art, science and math. In the classroom, perennialism uses a teacher-centered approach with an emphasis on discussion, memorization, and conveying moral lessons through readings.