 This “knowledge principle” (hereafter “KP”) raises a number of questions. One question concerns the scope of its applicability. For the principle to be plausible, it might be thought, one ought to restrict it to intelligent, volitional agents. As long as we accept the traditional conception of the will as being “blind” on its own and dependent on the guidance of the intellect, we might think that there is something to be said for the claim that we can only bring about what we know. That is, bringing about a volitional effect seems to presuppose our intending the effect, and we seem to intend only what we, through our intellect, actually represent or know. While most commentators seem to favor reading Malebranche as restricting the knowledge principle to minds, there is, as Steven Nadler has argued, at least one passage that seems to suggest that Malebranche is endorsing the wide scope applicability of KP (Conversations Chrétiennes, OCM 4:15–6). And, as Nadler has also pointed out, Geulincx and some Islamic occasionalists indeed pressed the view that the principle applies ubiquitously to all cases of genuine efficacy (Nadler 1999, 263–74).