This comes at the end of the story of the appearance of the Virgin of Guadalupe in 1356, told by a certain Padre to Fathers Vaillant and Latour in Santa Fe in the 1850’s (Willa Cather’s novel Death Comes to the Archbishop, 1927):

Father Vaillant began pacing restlessly up and down as he spoke, and the Bishop watched him, musing. It was just this in his friend that was dear to him. “Where there is great love, there are always miracles,” he said at length. “One might almost say that an apparition  is human vision corrected by divine love. I do not see you as you really are, Joseph; I see you through my affection for you. The Miracles of the Church seem to me to rest not so much upon faces or voices or healing power coming suddenly to near us from far off, but our perceptions being made finer, so that for a moment our eyes can see and our ears can hear what is there about us always.”