In 1965, a frustrated Bob Dylan was ready to quit the music industry. Abandoning his guitar, he retreated to a cabin in Woodstock, New York. Off the tour bus and away from the city, Dylan finally relaxed. After a few days, despite his best intentions, he started scribbling lyrics – and he couldn’t stop. “Like a Rolling Stone,” one of the most innovative and beloved songs in the history of rock and roll, was born. So what prompted Dylan’s moment of insight? Where do most artists and inventors get their creative impulse? Author and journalist Jonah Lehrer explores the science behind imagination in his new book “Imagine: How Creativity Works.”