Why a medieval master believed human reason hits a wall when studying God

Ideas & Philosophy · Published 3 October 2026 Swipe more like this →

In short: Marsilius of Inghen was a titan of late medieval thought, bridging the gap between Paris and the birth of Heidelberg University. While he mastered Aristotelian logic and physics, he famously argued that human intellect has a hard limit: it can prove God exists, but cannot grasp divine omnipotence.

Born near Nijmegen around 1340, Marsilius of Inghen became a central figure in 14th-century intellectual life. After studying under Jean Buridan in Paris, he rose to prominence as a master of arts and theology. His career took a dramatic turn after 1379, likely due to the Great Schism, leading him to help found the University of Heidelberg in 1386. There, he served as its first rector and became the institution's first theologian to receive a doctorate, holding the rectorship nine times before his death in 1396.

Marsilius was a key nominalist who insisted that universals exist only within the human mind, while the external world consists solely of individuals. As an empiricist, he argued that all knowledge begins with sensory experience. Yet, he maintained that metaphysical knowledge—the ability to grasp universal propositions—remained the highest form of human understanding. In physics, he rejected Aristotelian views on motion, instead championing the impetus theory, which posits that force is a property transferred from an agent to an affected object.

His theological work reveals a sharp distinction between natural capacity and divine faith. Marsilius argued that human reason is perfectly capable of proving God's existence, knowledge, and will. However, he warned that relying exclusively on these natural faculties leads to dangerous errors, such as denying God's omnipotence or ability to create ex nihilo. For Marsilius, true comprehension of the divine requires the leap of Christian faith, which transcends the limitations of logic. This nuanced approach made his commentaries on Aristotle and his theological treatises essential textbooks for generations of students across Europe.

His influence persisted long after his death, with his "Marsilian way" in logic and physics cited well into the 16th century. By synthesizing the work of predecessors like Buridan and Oresme with his own original theological insights, he helped shape the curriculum of Central European universities, leaving a legacy that balanced rigorous scientific inquiry with the humble recognition of human intellectual boundaries.

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