Reality, causality, and induction are not three separate bets—they are facets of a single stance: that the world is knowable. This chapter examines each in turn, shows why none can be proven, names the pragmatic loop that grounds them all, and invites you to hold these commitments consciously rather than blindly.

Not all foundations are equal. This chapter introduces the three-tier taxonomy at the heart of Foundations of Reason: axioms (what you cannot think without), presuppositions (what you cannot live without), and principles (what works well enough to earn its place). The grammar that structures everything that follows.