"A classic is a book that has never finished saying what it has to say."
Here are a few ways to accurately paraphrase this statement:
* A classic work of literature always has more to offer the reader, even after multiple readings.
* Classic works are timeless because they continue to resonate with readers across generations and cultures.
* The meaning of a classic text is not fixed; it evolves with the reader and the times.
* There is always something new to discover in a classic work, making it endlessly re-readable.
Essentially, Calvino is arguing that classic works are not static entities with fixed meanings. They are living, breathing texts that continue to speak to readers in new and meaningful ways.