The prayer of the heart is one of the dearest treasures of Christianity. It transforms any prayer by the fire of God’s love, allowing for an immersion in Christ whereby He is able to communicate to us the Holy Spirit. In his new book Praying with the Heart: The Little Way to Jesus, Jean Khoury entrusts to us the secret of the sustainable and successful way of practicing prayer of the heart. While remaining rooted in the living Tradition, the book offers new and abundant practical insights as well, making it a useful contemporary manual to this ancient spiritual practice. No Christian who loves Jesus and longs for the Holy Spirit should ignore this fruitful means of prayer.