Building on my previous post on the subject, Albert Taylor Bledsoe well documented the circular reasoning involved in Edwards’ primary assertion that the strongest motive force determines the will. Below is an excerpt:
The great doctrine of the Inquiry seems to go round in a vicious circle, to run into an insignificant truism…In the first place, when we ask, “what determines the will?” the author replies, “it is the strongest motive;” and yet, according to his definition, the strongest motive is that which determines the will…If we ask, then, what produces any particular act of volition, we are told, it is the strongest motive; and if we inquire what is the strongest motive, we are informed, it is the whole of that which operated to produce that particular act of volition. What is this but to inform us, that an act of volition is produced by that which produces it? (An Examination of President Edwards’ Inquiry Into the Freedom of the Will, pg. 36)
The entire chapter spans pages 36-46, and you can read it (and the entire book) online by following the link above. I have not yet read the whole book, but it seems to be a very well delivered critique of Edwards’ arguments from what I have been able to read thus far.