H. P. Grice on "implicature-free"

Grice distinguishes four elements or stages in the step-by-step development of freedom. First stage: "transeunt" causation: in inanimate objects. Hume's realm -- the atomists's realm. This is "external or 'transeunt' casuation," "when an object is affected by processes in other objects." Second stage: 'internal' or "immanent" causation: where a process in an object is "the outcome of previous stages in that process, as in a 'freely moving' body." Third stage: "Internal causation of living beings" "in which changes are generated in a creature by internal features of the creature which are NOT earlier stages of the same change ... but independent items, the function (or finality) of which is ... to provide for THE GOOD of the creature in question." Fourth stage: "a culminating stage at which the conception of a certain mode by a human .... of something as being for that creature's good is SUFFICIENT to *initiate* the doing of that thing."------ Grice expands on this interesting last stage: "At this stage, it is ... the case that the creature is LIBERATED ... from all factive causes."