The final episode, and the heart of the book. Theo and Lena reach the fourth quality, love, which the book treats not as sentiment but as will: the resolve that pulls every other quality into place. They follow it into ordinary life, sit honestly with the book's most dated passages, and arrive at its luminous closing images. Then they step back to take in the whole series as a single arc: see clearly, want less, steady yourself, give yourself away. A warm, slow farewell to a very short book that asks, above all, to be lived rather than admired.