I love a good sonnet

In high school, I heard a translation of a sonnet attributed to Michelangelo. It was in a video about the Renaissance artists. I went up to the teacher after class and asked if I could play it back. I rewound and played the laserdisc over and over till I had the whole thing written down.

Ten years later, I think that piece of paper is in my apartment somewhere. But I can't find it, so here's what I remember:

In a frail boat through stormy seas, my life
In its course has now reached the harbor
The bar of which all men must cross
To render an account of good and evil done.

I now know how laden with error
Was that fantasy which made Art for me
An idol and a king, and how mistaken
Is that earthly love which all men seek.

What of those thoughts of love, once light and gay,
As now I approach a twofold death?
One is certain; the other menaces.
No brush, no chisel quiets the soul
Once turned to the divine love of him
Who stretches out his arms on the cross.