See this legally free ebook:

  • The Condemnation of Pope Honorius, by Dom John Chapman, O.S.B. (London: Catholic Truth Society, 1907). With Imprimatur. Available in various formats (pdf, mobi/kindle, epub, etc.) at Internet Archive.

In remembrance of Pope Honorius I (+12 October 638), condemned for the heresy of Monothelitism. For other legally free ebooks, you may access the List of Free eBooks (Arranged by Title) and the List of Free eBooks (Grouped by Subject).

“It is clear that no Catholic has the right to defend Pope Honorius. He was a heretic, not in intention, but in fact; and he is to be considered to have been condemned in the sense in which Origen and Theodore of Mopsuestia, who died in Catholic communion, never having resisted the Church, have been condemned.” (Dom John Chapman, “Pope Honorius I“, Catholic Encyclopedia, 1910)