"I understood that if the Church had a body composed of different members, the most necessary and most noble of all could not be lacking to it, and so I understood that the Church had a Heart and that this Heart was burning with love. I understood it was Love alone that made the Church's members act, that if Love ever became extinct, apostles would not preach the Gospel and martyrs would not shed their blood. I understood that love comprised all vocations, that love was everything, that it embraced all times and places...in a word, that it was eternal!"
Her autobiography has been published in a number of editions, of which I read the edition assembled by John Clarke; the one which I read was edited by John Clarke and I highly recommend it. Although the language is a bit out of date (an issue rectified by John Beevers' newer translation) the wording of her letters has a depth of intensity and meaning which I feel is lost in the newer translations.
There are many sites on the Internet which are devoted to the life and teachings of this woman.