Quote
"Little pitchers have wide ears."
"Went in at the one eare and out at the other."

Hearing, or auditory perception, is the ability to perceive sounds through an organ, such as an ear, by detecting vibrations as periodic changes in the pressure of a surrounding medium. The academic field concerned with hearing is auditory science.
"Little pitchers have wide ears."
"Who is so deaf as he that will not hear?"
"He that hath ears to hear, let him hear."
"I was all ear, And took in strains that might create a soul Under the ribs of death."
"Hear me for my cause, and be silent, that you may hear."
"Such an exploit have I in hand, Ligarius, Had you a healthful ear to hear of it."