Chapter 42

The term hypostasis has two meanings. Sometimes it means simple existence. In this sense, substance and hypostasis are the same thing, which is why certain of the holy Fathers have said: cthe natures, that is to say, hypostases.’ At other times, it means the existence of an individual substance in itself. In this sense, it signifies the individual, that which is numerically different, which is to say, Peter and Paul, or that certain horse.

Now, one should know that substance which is devoid of form does not subsist of itself, nor does an essential difference, nor a species, nor an acc