Kitap 9
2
Thus the capacity for two contraries can belong to a thing at the same time, but the contraries cannot belong at the same time; i.e., the actualities, e.g. health and disease, cannot belong to a thing at the same time. Therefore one of them must be the good; but the potentiality may equally well be both or neither. Therefore the actuality is better.
3
Also in the case of evils the end or actuality must be worse than the potentiality; for that which is capable is capable alike of both contraries.
