13 From the primacy of the end, proved in this threefold way, our main conclusion follows.
13 From the primacy of the end, proved in this threefold way, our main conclusion follows.
13从目的的首要性出发，通过这三方面的论证，就得出了我们的主要结论。
13 From the primacy of the end, proved in this threefold way, our main conclusion follows.
13从目的的首要性出发，通过这三方面的论证，就得出了我们的主要结论。