None so deaf as those that will not hear. None so blind as those that will not see.

Hear, ye deaf; and look, ye blind, that ye may see.

Kindness is the language which the deaf can hear and the blind can see.

Those that rule must hear and be deaf, must see and be blind.

What! can you then make the deaf to hear or guide the blind and him who is in clear error? / But if We should take you away, still We shall inflict retribution on them; / Rather We will certainly show you that which We have promised them; for surely We are the possessors of full power over them.

Happiness is the sweet language that the blind can see and the wonderful song that the deaf can hear.