Three received abridgements of the same seven hundred verses. Read them in order — three, then seven, then eighteen — and each tier opens a little more of what the last one held closed.
18.51–53 · the closing chapter's own condensation
One verse gathered from each stretch of the middle chapters — a received sevenfold digest, carried by those with time for little else
A single representative verse chosen from each of the eighteen books, in order
None of these tiers replaces the reading. They are handrails for the days you cannot climb the whole stair.