Reply to Objection 2. The relation of the sensitive faculty to the sensible object is in one way the same as that of the intellectual faculty to the intelligible object, in so far as each is in potentiality to its object. For an intellect that understands the highest of intelligible objects is more able afterwards to understand those that are lower. If, however, in the process of intellectual operation the body is weary, this result is accidental, inasmuch as the intellect requires the operation of the sensitive powers in the production of the phantasms. Reply to Objection 3.
Motive power is of two kinds.
One, the appetitive power, commands motion. Whence it is clear that to move is not an act of the sensitive soul without the body. F. Innocentius Apap, O.P., S.T.M., Censor. Canonicus Surmont, Vicarius Generalis. F. Raphael Moss, O.P., S.T.L. and F. Leo Moore, O.P., S.T.L. Imprimatur.