None so deaf as those who will not hear

Possible interpretation: Nobody is more deaf than the person who decides he does not want to listen. Often used in reference to prejudice and intolerance.

Note: none (pronoun) = no person; no one | deaf (adj.) = unable to hear; not having the power of hearing | will (verb) = intend; desire [this is "will" used as a main verb, not as a modal auxiliary verb] | Also found as: "There are none so deaf as those who will not hear." There is a similar proverb: "None so blind as those who will not see."