“For Mary Ann Youngren,” from In the Western Night: Collected Poems, 1965-1990, FSG, 1991† Frank Bidart’s poem “For Mary Ann Youngren” begins with twelve lines evoking this woman’s imperious drive to escape from the human world, to repudiate it and become “untouchable” and absolutely free from human connections. The twelve lines would make a powerful poem by themselves – an unforgettable poem, indeed – ending thus: Dip a finger into the River of Time,— it comes back STAINED.   But that is not the end of “For Mary Ann Youngren.” There is a second section, of fourteen lines, beginning with what may be the most blatant, most naked, most urgently corrective turn I’ve ever seen in a good poem. I am not sure what…