Who said "Walls have ears."?

This quote is attributed to Aesop.

Walls have ears. - Aesop

"Walls have ears."

Aesop

Fabulist Ancient Greece 620–564

"Slow and steady wins the race."

"Look before you leap."

"A bird in the hand is worth two in the bush."

"The tortoise and the hare teach us that speed isn't everything."