The psalms have also a wonderful power to awaken in our hearts the desire for every virtue. Athanasius says: ‘Though all Scripture, both old and new, is divinely inspired and has its use in teaching, as we read in Scripture itself, yet the Book of Psalms, like a garden enclosing the fruits of all the other books, produces its fruits in song, and in the process of singing brings forth its own special fruits to take their place beside them.’ In the same place Athanasius rightly adds: ‘The psalms seem to me to be like a mirror, in which the person using them can see himself, and the stirrings of his own heart; he can recite them against the background of his own emotions.’
–Saint Pius X (1835-1914)