What moves those of genius, what inspires their work is not new ideas, but their obsession with the idea that what has already been said is still not enough.

Meaning of the quote

The quote suggests that great artists and thinkers are not driven by coming up with completely new ideas. Instead, their inspiration comes from a deep desire to keep exploring and expanding on what has already been said or done before. They are never satisfied, always feeling that there is more to discover or express, even when others think the topic has been fully covered.