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Primary sourceDocumentc. 1264

Tantum ergo

Thomas Aquinas · c. 1264

The closing stanzas of Thomas Aquinas's hymn Pange lingua, still sung today at Catholic Eucharistic devotion.

Aquinas composed this hymn, part of his liturgical writing that shaped Catholic worship for centuries.

Oval painted ceiling medallion framed in gold stucco with angels. A seated bearded man in a gold robe holds an open book inscribed with the words TANTUM ERGO SACRAMENTUM VENERAMUR. Another angel leans over him, and a cherub holds a cross.
Ceiling medallion depicting the Tantum Ergo hymn, Cathedral of San Rufino, Assisi.

About this source

What it is

Tantum ergo is the name given to the last two verses of Pange lingua, a Latin hymn composed by Thomas Aquinas around 1264. It is sung separately from the full hymn during the Catholic ritual of adoration and benediction of the Blessed Sacrament, and has been set to music by many composers over the centuries.

Why it matters

As a friar and theologian, Aquinas wrote liturgical texts as well as philosophical works, and this hymn shows how his writing shaped everyday Catholic worship long after his death. Its continued use in churches, and the many musical settings by later composers, show how deeply his words entered ordinary religious practice far beyond academic theology.

Look closer

  • Why might a hymn written in the 13th century still be sung in churches today?
  • What does the survival and translation of this text into many languages tell you about its importance?
  • What parts of Aquinas's thinking, beyond his philosophy, does a hymn like this reveal?

This document is part of the curated material that grounds the AI version of Saint Thomas Aquinas on Humy.ai — when students ask about related events, the AI can quote it and cite it.

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