On Conjectures
Nicholas of Cusa composed this treatise in 1441 as a companion to his earlier *De docta ignorantia*, developing further his revolutionary approach to the relationship between human knowledge and divine truth. Writing during the intellectual ferment of the early Renaissance, when traditional scholastic methods were being questioned but not yet replaced, Nicholas sought to articulate a new epistemology that could honor both human reason and the ultimate mystery of God.
The work argues that all human knowledge consists of conjectures—not mere guesses, but structured approximations that participate in truth without ever fully grasping it. Nicholas develops a sophisticated theory of symbolic knowledge, proposing that human understanding operates through a hierarchy of increasingly refined conjectures that approach but never reach absolute truth. He introduces his famous metaphor of mathematical progression, showing how human reason can move closer to truth through disciplined intellectual ascent while remaining fundamentally limited. The treatise explores how these conjectures function in different domains of knowledge, from mathematics and natural philosophy to theology, always emphasizing that our highest insights remain participatory rather than possessive. Central to his argument is the notion that recognizing the conjectural nature of our knowledge is not skepticism but the foundation of genuine wisdom.
The work has endured as one of the most sophisticated medieval treatments of epistemological humility, influencing later thinkers from Leibniz to contemporary philosophers of science. Its integration of Neoplatonic participation with rigorous logical analysis offers resources for anyone grappling with the relationship between faith and reason, certainty and mystery. Readers comfortable with abstract philosophical argument and familiar with scholastic terminology will find here a profound meditation on the nature of human knowledge. Those seeking devotional reading or practical spiritual guidance should look elsewhere, as Nicholas demands sustained intellectual engagement with complex metaphysical concepts.