but the twofold inter est of reason, where each party takes to heart one interest or the other, or affects to do so, hence either the maxim of the manifoldness of nature or that of the unity of nature; these maxims can of course be united, but as long as they are held to be objective insights, they occasion not only conflict but also hindrances that delay the discovery of the truth, until a means is found of uniting the disputedb interests and satisfying reason about them.