Book excerpt: Sor Juana Ines de la Cruz, known as "The Tenth Muse" of America, has been widely anthologized as a poet, intellectual, and defender of women's rights. Her calling as a nun, often overlooked, is clear in THE DIVINE NARCISSUS, an allegory ostensibly written to explain Christian concepts to the Aztecs whose plight under colonization it also dramatizes. This is the first English translation of this revealing work.