If it is true that...

The individuation of the human soul depends on the body for its inception but not for its end

Then it must be true that...

The human soul has the most potency among intellectual substances

If it is true that...

Intellectual substances are infinite in an inferior way and finite in a superior way

and

The individuation of the human soul depends on the body for its inception but not for its end

Then it must be true that...

Immaterial substances have no simple difference except for those species whose essences are composed of matter and form