“Oh, no, chiquita, only vibrations. It is as if the nerve moved just a little distance, but very, very fast, back and forth, or up and down.”

“And no picture is carried to the brain?”

“No, there is just a vibration in the brain.”

“And that vibration makes us see the chair?”

“Yes, little one.”

A moment of silence. Then––

“Padre dear, I don’t believe it.”

“Why, chiquita!”

“Well, Padre, what is it that sees the chair, anyway?”

“The mind, dear.”