Here is part (slightly revised for this blog) of an article I wrote a few years ago for CHRISTIANITY AND SOCIETY JOURNAL. I wanted to include it here in part because it has to do with a sonnet written by Gerard Manley Hopkins:
Spelt From Sibyl's Leaves. This sonnet does not conform to the standard of five stressed syllables per line; it goes for eight. Yet he wrote it as a sonnet and it has been generally so accepted. There is room, even in so strict a form as the sonnet, for some deviation.
Reading Difficult Poetry as a Christian Endeavor
Tears began welling up in my oldest daughter's eyes.