The professorial thesis has the full title, “the use in natural philosophy of the synthesis of metaphysics and geometry, whose first sample contains the physical monadology”. Kant argues that the combination of metaphysics and geometry can produce good philosophy (1:473). According to him, it seems easier to mate griffins with horses than to join exact science and conjecture (1:473.22–4), but truth is found in pursing just his course, the “physical monadology” is a case in point.