Conditioned by the interpretation of Astell's conception of liberty as an agent's faculty of preservation of internal self-governance in the context of arbitrary constraint, which distinguishes it from any reference to an absence of constraints, one could characterize it accordingly as reserved competency of an agent rather than as a condition for the performance of rational action. Although in A Serious Proposal to the Ladies, Part II, Astell distinguishes between Understanding as the receptacle of comparable ideas and the Will as the capacity to prefer one to the other, which closely follows Locke's distinction between the agreement and disagreement of perceived ideas (Understanding) and the desire for or rejection of an idea as motive ground for some bodily motion which begins an action (Will), she adds, at least in one interpretation, the notion of liberty as constituting a separate faculty from Will on account of the fact that reserved capacity for observable behavior and preserved ability for unobservable self-organization are different. It is this latter which insures that one can prefer submission to some customary behavior, e.g. Marriage, which makes one's grounds for action discoverable only in another agent, and nevertheless avoid becoming an agent of the respective custom itself.

Because Liberty then in contrast to Will can be described as the faculty of internal self-governance in contrast to that of the generation of optional effects by ideal causes, does Astell hold that some arbitrary constraint by customs handed down by tradition are a necessary condition of any rational action at all, on the basis that without them a faculty of internal organization would be irrelevant? If some customs, say, those given out by a Deity, are limited in number but can be put together in a potentially infinite variety of combinations, does Astell's Liberty entail a continually evolving form of preferable slavery? In particular, could Astell's view of marriage be described as a libertarian stoicism in free conformity with arbitrary custom overriding independent will?

Does Astell's Liberty include a type of preferred enslavement that is always evolving? For example, if some practices, such as those that are bestowed by a deity, are restricted in quantity but may be combined in an endless number of different snow rider 3d ways, then does this imply that Astell's Liberty is a form of superior slavery?