 Such attempts to interpret motion and rest as numerically expressible quantities constitute efforts to make Spinoza's physical theory relevant to contemporary science, by displaying how it can conform to, and even constitute a blueprint for, its mathematical structure. They stand, then, as responses both to Gabbey's implication that because Spinoza does not say how his notion of motion and rest can be expressed mathematically, his views are too vague and sterile to be of such contemporary relevance, and to the difficulties we have seen, in conceiving how motion and rest, as we conceive them imaginatively, could possibly serve to individuate bodies. But at the end of the final section of this article, we will see that, quite apart from the vagueness, anachronism (Spinoza anticipating not just Mendeleyev, but also Watson and Crick?) and other interpretative difficulties faced by such attempts, there are reasons to suppose that any effort to render basic principles of physical theory through numerical quantification may run deeply counter to Spinoza's own attitude.