"Creatively, it was ninety-eight percent Bill and one percent Bob, and the rest is in the ether. We don’t know. It was so much more Bill from the get-go, creatively. Bob Kane had financial advice that served him well. But as far as the major elements of Batman, the example I like to give – it’s probably even in the film, because I say it so much – if you just stop a random grandmother on the street and say, ‘Name something you know about Batman,’ first of all, she’ll know something. Everybody knows something. And whatever that person says will be a Bill Finger contribution. He was that pervasive in the creation of Batman."
Batman

January 1, 1970