The divine bond is the unified and indispensable dynamis. The corresponding traits of cosmic structure—unity and harmony—make Kant’s argument from design possible. The third and final part of the Only Possible Ground contains his assessment of the ontological and teleological arguments. Only the former qualifies, strictly speaking, as a proof (2:161–1). A comparison reveals their differences. The one is a rigorous and conceptual demonstration, while the other is its probabilistic and empirical application. But truth is to be found in their harmony; both are rooted in the same key notion, possibility. Since empirical design is built into the intelligible dynamis of objects, both arguments harmonize over the essence of the bond. This is why the book has its peculiar structure: two arguments (Beweise) but one ground (Beweisgrund), which is possibility, Kant’s Möglichkeit or Aristotle’s dynamis.