The long unity among American nations in contrast to the disunity of Europe is the central theme of this group of philosophical essays by a Mexican man of letters. The title piece examines this ""new culture in a war-ravaged world; other essays pay tribute to the native poetry of New Spain, to an early Mexican poet Sor Juana Ines de la Cruz, to a late Mexican poet, Luis G. Urbina. An essay of exceptional beauty deals with the enchanted Valley of Mexico with its New World Venice into which Cortes stumbled -- Vision of Anahuac. A handsome format, modern in feel, scarcely justifies so high (and limiting) a price for 172 page volume of essays.