Therefore also to enjoy is an act of the appetitive power. But sensible fruit is that which we expect the tree to produce in the last place, and in which a certain sweetness is to be perceived. Hence fruition seems to have relation to love, or to the delight which one has in realizing the longed-for term, which is the end. Now the end and the good is the object of the appetitive power. Wherefore it is evident that fruition is the act of the appetitive power.
Nothing hinders one and the same thing from belonging, under different aspects, to different powers.
Accordingly the vision of God, as vision, is an act of the intellect, but as a good and an end, is the object of the will. Hence the perfection and end of each power, in so far as it is a good, belongs to the appetitive power. Therefore other animals cannot enjoy. Further, to enjoy relates to the last end. But irrational animals cannot obtain the last end.