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Summa Theologiae · III, q. 60

Question 60. What Is a Sacrament?

Thomas Aquinas, Summa Theologiae, Third Part. 8 articles.

Read in the reading room → This question at New Advent

Text: Summa Theologiae, Project Gutenberg #19950, Third Part (Tertia Pars), translated by the Fathers of the English Dominican Province. The Third Part of the Summa in the English Dominican translation (first printed 1911 to 1925; second and revised edition from 1920). A sample check on 2026-11-09 against pre-1931 printings at the Internet Archive (first printings of 1915 and 1916 and the second and revised edition of the 1920s) found that the article text matches, with no 1947 introduction, synopsis, or index. The phrase “From the Complete American Edition” in Gutenberg's catalog title is a provenance note only. Question and article numbers were added by the transcriber. The Gutenberg text ends at question 90 of the Third Part, where Aquinas stopped writing; the Supplement is a separate edition here, transcribed from 1917 to 1922 printings of the same translation. Rights: Public domain (US)

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After considering those things that concern the mystery of the incarnate Word, we must consider the sacraments of the Church which derive their efficacy from the Word incarnate Himself. First we shall consider the sacraments in general; secondly, we shall consider specially each sacrament.

Concerning the first our consideration will be fivefold: (1) What is a sacrament? (2) Of the necessity of the sacraments; (3) of the effects of the sacraments; (4) Of their cause; (5) Of their number.

Under the first heading there are eight points of inquiry:

(1) Whether a sacrament is a kind of sign?

(2) Whether every sign of a sacred thing is a sacrament?

(3) Whether a sacrament is a sign of one thing only, or of several?

(4) Whether a sacrament is a sign that is something sensible?

(5) Whether some determinate sensible thing is required for a sacrament?

(6) Whether signification expressed by words is necessary for a sacrament?

(7) Whether determinate words are required?

(8) Whether anything may be added to or subtracted from these words?

Articles

  1. Whether a Sacrament Is a Kind of Sign?
  2. Whether Every Sign of a Holy Thing Is a Sacrament?
  3. Whether a Sacrament Is a Sign of One Thing Only?
  4. Whether a Sacrament Is Always Something Sensible?
  5. Whether Determinate Things Are Required for a Sacrament?
  6. Whether Words Are Required for the Signification of the Sacraments?
  7. Whether Determinate Words Are Required in the Sacraments?
  8. Whether It Is Lawful to Add Anything to the Words in Which the Sacramental Form Consists?

Also online, linked only: the same translation at New Advent and the Latin text at Corpus Thomisticum. Neither is copied here.

Source: Thomas Aquinas. Summa Theologica, Third Part. Project Gutenberg #19950. Project Gutenberg record. Public domain in the USA. Outside the U.S., check local copyright rules. Project Gutenberg notices retained. The full Project Gutenberg license is kept in the hosted text.