“What were they?”
“Just people, Dickie. I don’t pretend they were flesh and blood. I don’t pretend they ever spoke to me or looked at me. They looked through me, sometimes.”
“But, Mermaid, you know it’s silly.”
“But, Dickie, I know it’s not.”
Young Hand finished his ginger ale and made a face at the mug. Then he asked: “Well, how do you account for ’em?”
“Have I got to account for them, Dickie?”
“I mean, why can’t I see them?”
“How do you know you can’t?”
“I never have.”
“That doesn’t prove anything—it doesn’t prove you never will. Dick, see here, go back to your mathematics. There’s the fourth dimension. All we can see and feel has only three dimensions—length, breadth, and thickness or height—but mathematics tells you things may exist which measure four ways instead of three.”