Piedra del Sol is one of the greatest poems written in spanish during the twentieth century, In this key work of literary criticism, Victor Manuel Mendiola explores the varied stylistic influences in the poem, the cultural scenario in which it was first published in 1957, and the origins of the controversy stirred by it. After many years of polemic, interpretations, and cultural upheaval anly one thing is certain, the poetic world of Paz was as vivid then as it is now.