afterwards that there is of contraries, and also of relatives. In the same manner we must divide these again, as long as it is possible to divide them, as that (there is the same science) of good and of evil, and of white and black, of the cold and the hot, and likewise of other things.
Chapter 15
Concerning proposition then, what has been stated will suffice, but as to how many ways (a thing may be predicated), we must discuss not only such things as are predicated in a different manner, but also we must endeavour to give their reasons; as not only that justice and fortitude are called good in one way, but what conduces to a good habit of body and to health in another way, but also that some things (are called so) from being certain qualities, but others from being effective of something, and not from themselves being certain qualities, and indeed in a similar manner in other things.
Whether however a thing is predicated multifariously, or in one way in species, we must investigate through these. First, we must consider in the contrary, if it is multifariously predicated, whether it differs in species or in name, for some things immediately differ even in names, as the grave is contrary in voice to the sharp, but in magnitude the obtuse. Therefore it is clear that the contrary to the sharp is predicated multifariously, but if this be so, the sharp also is, for according to each of these, the contrary will be different, since the same sharp will not be contrary to the obtuse and to the grave, but the sharp will be contrary to each. Again, to the heavy in voice, the sharp is contrary, but in weight, the light, so that the heavy is predicated mul-
