Sam liked being on the move. He’d throw a fishing rod or an old acoustic guitar in the back seat of his truck, maybe take a dog, but for sure a notebook, and a pen, and a pile of books. He liked packing up and leaving just like that, going west. He liked getting a role that would take him somewhere he really didn’t want to be, but where he would wind up taking in its strangeness; lonely fodder for future work.
Source: My Buddy: Patti Smith Remembers Sam Shepard | The New Yorker