his learning or advice, since
this is not a sale of truth or science, but a hiring of labor. If, on
the other hand, he be so bound by virtue of his office, this would
amount to a sale of the truth, and consequently he would sin
grievously. For instance, those who in certain churches are appointed
to instruct the clerics of that church and other poor persons, and
are in receipt of an ecclesiastical benefice for so doing, are not
allowed to receive anything in return, either for teaching, or for
celebrating or omitting any feasts.

Reply Obj. 4: It is unlawful to exact or receive anything as price
for entering a monastery: but, in the case of small monasteries, that
are unable to support so many persons, it is lawful, while entrance
to the monastery is free, to accept something for the support of
those who are about to be received into the monastery, if its
revenues are insufficient. In like manner it is lawful to be easier
in admitting to a monastery a person who has proved his regard for
that monastery by the generosity of his alms: just as, on the other
hand, it is lawful to incite a person's regard for a monastery by
means of temporal benefits, in order that he may thereby be induced
to enter the monastery; although it is unlawful to agree to give or
receive something for entrance into a monastery (I, qu. ii, cap. Quam
pio).
_______________________

FOURTH ARTICLE [II-II, Q. 100, Art. 4]

Whether It Is Lawful to Receive Money for Things Annexed to Spiritual
Things?

Objection 1: It would seem lawful to receive money for things annexed
to spiritual things. Seemingly all temporal things are annexed to
spiritual things, since temporal things ought to be sought for the
sake of spiritual things. If, therefore, it is unlawful to sell what
is annexed to spiritual things, it will be unlawful to sell anything
temporal, and this is clearly false.

Obj. 2: Further, nothing would seem to be more annexed to spiritual
things than consecrated vessels. Yet it is lawful to sell a chalice
for the ransom of prisoners, according to Ambrose (De Offic. ii, 28).
Therefore it is lawful to sell things annexed to spiritual things.

Obj. 3: Further, things annexed to spiritual things include right of
burial, right of patronage, and, according to ancient writers, right
of the first-born (because before the Lord the first-born exercised
the priestly office), and the right to receive tithes. Now Abraham
bought from Ephron a double cave f