All lives are composed of two basic elements," the squirrel said, "purpose and poetry. By being ourselves, squirrel and raven, we fulfill the first requirement, you in flight and I in my tree. But there is poetry in the meanest of lives, and if we leave it unsought we leave ourselves unrealized. A life without food, without shelter, without love, a life lived in the rain—this is nothing beside a life without poetry.

From 2003 through 2011 Beagle was involved in a financial dispute with Granada over nonpayment of contractually due profit and merchandising shares. Beagle's work as a screenwriter interrupted his early career direction as a novelist magazine nonfiction author and short-story writer. In the 1970s Beagle turned to screenwriting.

During the last twenty-five years he has won several literary awards including a World Fantasy Award for Life Achievement in 2011. His best-known work is The Last Unicorn (1968) a fantasy novel he wrote in his twenties which Locus subscribers voted the number five "All-Time Best Fantasy Novel" in 1987.