Mathews served as Paris Editor of the Paris Review from 1989 to 2003 and the Spring 2007 issue offers an interview. The summer 1998 issue offers samples of his perverbs -- that is, permuted proverbs:
"The word perverb was invented
by Paris review editor Maxine Groffsky
to describe the result obtained by crossing two proverbs.
For example, "All roads lead to Rome" and "A rolling stone gathers no moss"
give us "All roads gather moss" and "A rolling stone leads to Rome"