"I don't worry about Alzheimer's happening, if it does come," says Sister Dorothy. "The important thing is that I don't think I'll ever lose my faith.

"Often, the sisters who get Alzheimer's seem to be lost in another world and then they'll suddenly start saying the Our Father or singing hymns, or just talk about God. It seems that the last thing to go is praying."

I found this at Dawn Eden's blog. Its a few days old, but I loved the quote. Its about a study of nuns with Alzheimer's.