APAD: None so deaf as those that won’t hear.

None so deaf as those that won’t hear

Those who refuse to listen or understand are the most ignorant or deaf. It is impossible to communicate with someone who is not willing to listen.

Often used in reference to prejudice and intolerance.

  A poor man here is asking for relief,

  The full-fed, portly man appears quite deaf; 

  He’s humbly pleading - see the poor creature;

  The big man before him grows still deafer;

  Alas! how passing strange does this appear,

  None are so deaf as those that will not hear.

  Of those whose vision’s dim, where’er they be,

  None are so blind as those who will not see.

   —Barber, John W. The Handbook of Illustrated Proverbs (New York, NY: George F. Tuttle, 1857)