“Suppose Jack the Ripper didn’t grow old? Suppose he is still a young man today?

“It’s a crazy theory, I grant you,” he said. “All the theories about the Ripper are crazy. The idea that he was a doctor. Or a maniac. Or a woman. The reasons advanced for such beliefs are flimsy enough. There’s nothing to go by. So why should my notion be any worse?”

“Because people grow older,” I reasoned with him. “Doctors, maniacs, and women alike.”
–Robert Bloch (Yours Truly, Jack the Ripper)