"Opuscula" or "Little Treatises" are very numerous. In the
works were listed among the "Opuscula" which were not written by St.
In the "official" catalogue of Reginald of Piperno the
seventy. They may be roughly classified as philosophical and
on moral and canonical questions, on Liturgy and the religious
and catechetical instructions. There are some "Opuscula" not listed
"official" catalogue which are now considered authentic. The five
which are translated in the present volume are undoubtedly
The Explanations of the "Creed," the "Our Father," and the
are numbers 66, 65, 68 respectively in the catalogue which
prepared for the process of canonization of St. Thomas. The Explanation
"Hail Mary" is listed in the catalogue of Bernard Guidonis and in
lists. This is noteworthy, since Bernard had before him the official
Both Mandonnet and Grabmann consider the work authentic. 10 St. Thomas
these Explanations to the students and people of Naples during his
Lenten season on earth. The talks on the Ten Commandments were written
Peter d'Andrea, and the Explanation of the other prayers were
reported by his secretary and companion, Reginald of Piperno.
"Explanation of the Seven Sacraments" is the second part of the
"De fidei articulis et septem sacramentis," which St. Thomas
the request of the Archbishop of Palermo in 1261-62. It is
that the famed "Decretum pro Armenis" (Instruction for the
issued by the authority of the Council of Florence, is taken
verbatim from the second part of this "Opusculum" (i.e., the
of the Seven Sacraments"). It is not a definition of the
but a practical instruction, as Denzinger points out. 11
latest editions of the "Opuscula" are the Vives edition (Paris) of
and the Parma edition of 1852-73. This latter edition is reedited
Mandonnet with a new order and an introduction (Lethielleux, Paris,
The "catechetical" "Opuscula" are here given in one volume
for the first time. An English translation of two of these under
title, "On the Commandments" and "On the Lord's Prayer,"
was made by
Reverend H. A. Rawes in England in 1891. It is now out of print and
inaccessible. Recently an English translation was made by Rev.
Shapcote, O. P., in two small volumes with the titles, "The Three
Prayers" and "The Commandments of God" (Burns and Oates, 1937).
"Explanation of the Seven Sacraments," however, is here given for the
time in English.