“In order to finish His work He sent us the Holy Ghost. This Divine Spirit, who is none other than the substantial love of the Father and the Son, was not satisfied with instilling grace into our souls together with the infused virtues, especially divine charity, but gave Himself to us in order that we might not only enjoy His presence and possess His gifts, but even His very person.”
(Very Reverend Adolphe Tanquerey, The Spiritual Life, p.41)