Jesu dulcis memoria is a hymn often attributed to St Bernard of Clairvaux. The original poem, depending on the manuscript, ranges from forty-two to fifty-three stanzas. Three sections of it are used as hymns in the Liturgy of the Hours of the Feast of the Holy Name of Jesus: “Iesu dulcis memoria” (Vespers), “Iesu rex admirabilis” (Office of Readings), “Iesu decus angelicum” (Lauds).
Several English hymns sung today are based on translations of Jesu dulcis memoria. These include “Jesus, Thou Joy of Loving Hearts” (1858 translation by Ray Palmer) and “Jesus, the Very Thought of Thee” (1849 translation by Edward Caswall).