I think it's a mistake to dismiss them just for that reason. He's been dead for 26 years, and you can get the books second-hand, so it's easy to acquire them while ensuring no money goes to him or his estate if that's what you're worried about. They're an absolutely fantastic set of novels, full of joy and adventure and excitement and humor and astonishing erudition.. Tom Stoppard admired him (as mentioned in the article) and Thomas Pynchon even wrote him into a brief scene in Mason & Dixon.