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CONCERNING BEING AND ESSENCE n 

dimensions can be designated in it, whatsoever that form may 
be, and whether any further perfection can issue from it or not. 
And in this mode body is the genus of animal, because in 
animal nothing is taken which is not contained implicitly in 
body; for soul is not a form different from that by means of 
which three dimensions can be designated in that thing. And 
therefore when it was said that body is what has a form such 
that from the form three dimensions can be designated in the 
body, it was to be understood of whatever the form might be, 
whether animality or lapidity or any other. And so the form of 
animal is contained implicitly in the form of body, according 
as body is its genus. And such too is the habitude (relation) of 
animal to man. For if animal denoted only a certain thing 
which has a perfection such that it can feel and be moved by 
virtue of a principle existing in itself, to the exclusion of any 
further perfections, then whatever further perfection super- 
vened to the thing, would be disposed in respect to (haberet 
se ad) animal by means of the partitive mode (modum partis) 
and not as if implicitly beneaxh (included in) the principle of 
animal, and thus animal would not be a genus. But animal is 
a genus according as it signifies a certain thing from the form 
of which can issue feeling and motion, whatsoever this form 
may be, whether it be the sensible soul alone or the sensible 
and rational together. Thus, therefore, genus signifies indeter- 
minately all that which is in species, for it does not signify mat- 
ter alone. Similarly, difference signifies the whole, but it does 
not signify form alone. And definition likewise signifies a 
whole, and also species does. But yet in diverse ways: because 
genus signifies a whole as a certain determination determining 
what is material in a thing, without the determination of the 
proper form. Whence genus is taken from matter, although it is 
not matter, as is evident in the instance of what is called body 
because it has a perfection such that three dimensions can be