"It’s no longer possible to live without the aid of Science, the precious treasure of which increases every day—but that very wealth makes it increasingly difficult to learn; it’s therefore necessary that intelligence becomes increasingly powerful.”

At that moment, a roseate light filled the room, neutralizing that of the lighting microbes. 

“A telephonic communication,” said Sinusia. 

It was, indeed, by such signals that the ancient bells had been replaced. There was no longer any apparent receiver or transmitter; it was sufficient to speak in the direction of the ceiling. The voice was reproduced by a loudspeaker.

Henri Allorge, 1922