arity extends also to the angels.

Reply Obj. 1: Our neighbor is not only one who is united to us in a
common species, but also one who is united to us by sharing in the
blessings pertaining to everlasting life, and it is on the latter
fellowship that the friendship of charity is founded.

Reply Obj. 2: Dumb animals are united to us in the proximate
genus, by reason of their sensitive nature; whereas we are partakers
of everlasting happiness, by reason not of our sensitive nature but of
our rational mind wherein we associate with the angels.

Reply Obj. 3: The companionship of the angels does not consist
in outward fellowship, which we have in respect of our sensitive
nature; it consists in a fellowship of the mind, imperfect indeed in
this life, but perfect in heaven, as stated above (Q. 23, A. 1, ad 1).
_______________________

ELEVENTH ARTICLE [II-II, Q. 25, Art. 11]

Whether We Are Bound to Love the Demons Out of Charity?

Objection 1: It would seem that we ought to love the demons out of
charity. For the angels are our neighbors by reason of their
fellowship with us in a rational mind. But the demons also share in
our fellowship thus, since natural gifts, such as life and
understanding, remain in them unimpaired, as Dionysius states (Div.
Nom. iv). Therefore we ought to love the demons out of charity.

Obj. 2: Further, the demons differ from the blessed angels in the
matter of sin, even as sinners from just men. Now the just man loves
the sinner out of charity. Therefore he ought to love the demons also
out of charity.

Obj. 3: Further, we ought, out of charity, to love, as being our
neighbors, those from whom we receive favors, as appears from the
passage of Augustine quoted above (A. 9). Now the demons are useful
to us in many things, for "by tempting us they work crowns for us,"
as Augustine says (De Civ. Dei xi, 17). Therefore we ought to love
the demons out of charity.

_On the contrary,_ It is written (Isa. 28:18): "Your league with
death shall be abolished, and your covenant with hell shall not
stand." Now the perfection of a peace and covenant is through
charity. Therefore we ought not to have charity for the demons who
live in hell and compass death.

_I answer that,_ As stated above (A. 6), in the sinner, we are bound,
out of charity, to love his nature, but to hate his sin. But the name
of demon is given to designate a nature deformed by sin, wherefore
demons should not be loved out of chari