How it works

Augustine of Hippo, the North African bishop, set out four states of human history in the Enchiridion (c. 420) and On Rebuke and Grace (c. 426), running from humanity’s free creation through sin and grace to a final peace. Carlson’s chart lists the scheme as “The Bible / Augustine of Hippo” and places it beside the screenplay models, since it moves through the same sequence of a world, a fall, a rescue and a new order.

Each state takes a quarter. Creation (0–25%) is life before the law, posse peccare, posse non peccare: able to sin and able not to. At 25% the Fall puts humanity under the law, non posse non peccare, unable not to sin. Grace arrives at 50% with Salvation (50–75%), posse non peccare, able not to sin. Eternity (75–100%) is full and perfect peace, non posse peccare, where sin is no longer possible.

The turns fall on the common quarter marks but carry different weight. The 25% turn is a fall, where most models have the hero commit, and the 50% turn is a rescue, so the midpoint is where the story starts to rise. Boston’s Fourfold State (1720) follows the same arc. Vonnegut’s Man in Hole traces a similar line with its bottom at 45–60%; Augustine’s low ground is the whole second quarter. No state maps to an inciting incident or a climax.

The shape suits redemption stories, and it shows how far back the fall and rise goes. Since Augustine was writing doctrine, every scene has to be invented. One way in is to read each Latin phrase as what the protagonist can and cannot do in that quarter, then build scenes that test it. The rescue at 50% needs a cause the reader believes.