Walls have ears

Here we see the echoes of Cuban politics in Edel’s daily life as his grandfather saves every scrap and his grandmother warns that the walls have ears.

In case the walls have ears, they speak in code — escapees collectively are “The Library,” individual fugitives “Books,” their hiding places “Shelves.”

A former secondary school teacher who has lived in Hong Kong for more than a decade said although she loved the city and its people: “I don’t want to live somewhere where the walls have ears.”

Now we are free, before we lived in fear and said "the walls have ears".

Walls have ears; you never know who might be listening.