According to Aristotle, what leads a writer to create?

According to Aristotle, intuition and harmony leads a writer to create.

In the Poetics (335-322 B.c.), he writes:

“[T]he instinct of intuition is implanted in man from childhood . . . and through intuition he learns his earliest lessons. . . . Next there is the instinct for ‘harmony’ and rhythm, meters being manifestly sections of rhythm.”