EN
This article presents the concept of joy in surviving more than 90 letters of St. Ambrose of Milan. As it is clear from the above analysis of St. Ambrose’s letters, he included in them broad and deep reflections on a joy. Certainly the vocabulary that was used by Bishop of Milan to describe the phenomenon of joy reflects the richness of this phenomenon. The variety of topics, context, sources of joy prsented in his letters show the importance of joy in the life and work of the Bishop of Milan. He appreciates the earthly joy, drawing from ordinary, earthly life, but beyond it he submits the spiritual joy, „joy of the heart” (iucunditas cordis), which comes from God, the Giver of wisdom.