"I am Patrick, yes a sinner and indeed untaught; yet I am established here in Ireland where I profess myself bishop. I am certain in my heart that "all that I am," I have received from God. So I live among barbarous tribes, a stranger and exile for the love of God."
"I am Patrick, a sinner, most uncultivated and least of all the faithful and despised in the eyes of many."
"Christ beside me, Christ before me, Christ behind me, Christ within me, Christ beneath me, Christ above me."
Also, a reader sent in a hymn - a new one to me - St. Patrick's Breastplate - which is a translation from Gaelic. Good tune, and it uses those words in the third quote.