Transition One · From the Signature to the Two Liberations
Chapter one set down three things; take the inventory.
One word: signature. The mastery is the signature of exhaustion — in the Deer Park's definition, everything after "arhat" is the language of settlement; the laid-down burden, the ended fetters, the right liberation are not merits beyond the exhaustion of taints but the unfolding of it. One word: co-arisen. The seal and the thing sealed are set down in one impression, no before and no after; the freedom is not a fruit collected after the exhaustion but its co-arisen aspect. And one distinction: free-from, not power-to. The mastery is "nothing left that can bind," not "more things one can do"; the one who can fly is not thereby free, and the one whose taints are exhausted is necessarily free.
But all of this says only where the freedom comes from, and what it is not. Its substance — what the freedom itself rests upon — has not yet been faced directly.
The scriptures gave the names long ago. In that teaching of the seven points of skill at Jeta's Grove: "one attains the exhaustion of taints, attains the taintless — the liberation of mind, the liberation by wisdom." The liberation of mind; the liberation by wisdom. The substance of the arhat's freedom is this pair: the mind, unfastened from craving; wisdom, breaking through ignorance. Wherever the canon records the exhaustion of taints, it raises these two liberations together, almost without exception — this is the standard script of the arhat's freedom.
Two questions follow, and they are exactly the two chapters of the next part.
The first: is this liberation secure? Can it be lost? A freedom that could still be gained and then forfeited — has it truly reached bottom? The canon's answer rests on one word: unshakable. "The unshakable liberation of mind" — no condition remains that could make it fall back. The first chapter of Part Two weighs those two syllables: unshakability is not a further merit beyond the freedom; it is the freedom's degree of completion — a liberation that can still regress is a liberation that has not yet reached its floor.
The second: the suttas plainly record two kinds of arhat — liberated by wisdom, and liberated both ways. The same exhaustion of taints; why two kinds? Is one higher and one lower? The second chapter of Part Two settles that account: the difference lies in the attainment of the deep concentrations, not in any depth of the exhaustion — the signature of the freedom is one and equal across both.
First, "unshakable."