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Thomas Aquinas, Summa Theologiae, First Part. 5 articles.
Read in the reading room → This question at New Advent
Text: Summa Theologiae, Project Gutenberg #17611, First Part (Prima Pars), translated by the Fathers of the English Dominican Province. The First 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. Rights: Public domain (US)
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We next consider the speech of the angels. Here there are five points of inquiry:
(1) Whether one angel speaks to another?
(2) Whether the inferior speaks to the superior?
(3) Whether an angel speaks to God?
(4) Whether the angelic speech is subject to local distance?
(5) Whether all the speech of one angel to another is known to all?
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, First Part. Project Gutenberg #17611. 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.