Likewise...

Likewise, all bodies have the possibility to be changed into two or several other bodies of the same kind (union and separation). This possibility for change and transformation is a kind of quality which is called the ‘quality of preparedness’ ( kayfiyyat isti‘dādī ) or ‘possibility of preparedness’ ( imkān isti‘dādī ).

This is capable of intensity and weakness, perfection and deficiency, as the preparedness of a fetus to change into an existent which possesses a spirit is greater than that of a zygote. This accident needs a substantial subject which cannot be considered to be a substance possessing actuality, since this substance has to have the possibility for the appearance of this quality, and the supposed possibility will be another quality…