And since there are no other things prior to the contraries and homogeneous with the intermediates, all intermediates must be compounded out of the contraries. Therefore also all the inferior classes, both the contraries and their intermediates, will be compounded out of the primary contraries.
Gainera, genero berean kontrakoen aurretiko ezer ez 30) dagoenez, bitarteko guztiak izango dira kontrakoez osatuak; beraz, menpeko guztiak-kontrakoak zein bitartekoak-kontrako lehenez osatuak izango dira.