This posthumous collection of six essays by Italo Calvino serves as both a reflection on the nature of literature and a manifesto for the upcoming millennium. Originally prepared for the prestigious Charles Eliot Norton Lectures at Harvard University in 1985 but left unfinished at his death, the volume explores six literary virtues: lightness, quickness, exactitude, visibility, multiplicity, and the incomplete sixth memo consistency. Through eloquent, concise, and deeply associative prose, Calvino draws on classical and modern references, aiming to suggest how literature might respond to changing media and an approaching new era. It remains a key text in 20th‑century literary theory and criticism, bridging creative writing and conceptual reflection.