 Kant’s claim is that even if we could grant that the order and purposiveness of nature gives us good reason to suppose some intelligent designer, it does not warrant the inference to an ens realissimum. At most, Kant tells us, the proof could establish a “highest architect of the world…., but not a creator of the world.” (A627/B655). The last inference, that to the ens realissimum, is only drawn by moving far away from any consideration of the actual (empirical) world. In other words, here too, Kant thinks that the rational theologist is relying on a transcendental (a priori) argument. Indeed, according to Kant, the physicotheological proof could never, given its empirical starting point, establish the existence of a highest being by itself alone, and must rely on the ontological argument at crucial stages (cf. A625/B653). Since, according to Kant, the ontological argument fails, so does the physicotheological one.