This, however, since it arises from moral order as a unity which is grounded in the essence of freedom and not contingently founded through external commands, brings the purposiveness of nature down to grounds that must be inseparably connected a priori to the inner possibility of things, and thereby leads to a transcendental the ology that takes the ideal of the highest ontological perfection as a principle a of systematic unity, which connects all things in accordance with universal and necessary laws of nature, since they all have their ori gin in the absolute necessity of a single original being.