Pope Leo XIII on Devotion to the Holy Ghost

From Divinum Illud Munus:

How He should be invoked is clearly taught by the Church, who addresses Him in humble supplication, calling upon Him by the sweetest of names: “Come, Father of the poor! Come, Giver of gifts! Come, Light of our hearts! O, best of Consolers, sweet Guest of the soul, our refreshment!” (Veni Sancte Spiritus). She earnestly implores Him to wash, heal, water our minds and hearts, and to give to us who trust in Him “the merit of virtue, the acquirement of salvation, and joy everlasting.” Nor can it be in any way doubted that He will listen to such prayer, since we read the words written by His own inspiration: “The Spirit Himself asketh for us with unspeakable groanings” (Rom 8., 26).

Lastly, we ought confidently and continually to beg of Him to illuminate us daily more and more with His light and inflame us with His charity: for, thus inspired with faith and love, we may press onward earnestly towards our eternal reward, since He “is the pledge of our inheritance” (Eph 1, 14). . .(Read more.)