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Aristotle referred to the sense of hearing in his work "The Problems". He correlated hearing with the capacity of learning, he believed that the sense of hearing was the most important in order to learn things.

Was Aristotle the first to write about the hearing - and the lack of it? Is there any evidence in his work that he accepted that there is a distinguish between deafness and mutism?

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The Problems: A collection of problems written in a question and answer format - I wonder why this sounds familiar ;) Oh, and welcome to History.SE! –  Yannis Rizos Jan 15 '13 at 23:08
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The earliest mention of deafness and otology can be found in the Ebers Papyrus (1550 BC), a list of medical remedies and spells against common ailments. The Ancient Egyptians of the era treated various ear diseases, including the "Ear-that-Hears-Badly", by injecting olive oil, red lead, ant eggs, bat wings and goat urine into the ears1.

In general, the Ancient Egyptians were tolerant of people with disabilities, a quote from the Instruction of Amenemopet stands out2:

Beware of robbing a wretch or attacking a cripple.
Do not laugh at a blind man, nor tease a dwarf, nor cause hardship for the lame.
Don't tease a man who is in the hand of the god (i.e. ill or insane)

In contrast, the Ancient Greeks aren't thought of as being particularly tolerant towards people with disabilities. They were a far more militaristic society than the generally peaceful Egyptians, and ascribed great importance to physical prowess. When it comes to deafness and muteness, matters were extremely complicated. The Greeks considered their language to be perfect and anyone who couldn't speak it, including deaf and mute people, barbarians.

That said, the actual behaviour of the Greeks towards the deaf is a matter of debate. Most quotes, including Aristotle's, use the word "ἐνεος" (or various forms of) that translates to "speechless" to refer to the deaf. The prevalent opinion among historians is that "ἐνεος" had a double meaning and may have often been used pejoratively, thus most English translations favour "dumb" instead of "speechless" when translating "ἐνεος". Raymond Hull challenges that notion in Aural Rehabilitation: Serving Children & Adults, and posits3 that what eventually became the main interpretation of Aristotle's statements on the matter may very well be a misinterpretation stemming from the dual meaning of "ἐνεος".

In any case, Aristotle's philosophy on deafness is summarized in the following quotes:

  • On Sense and the Sensible:

    Of the two last mentioned, seeing, regarded as a supply for the primary wants of life, and in its direct effects, is the superior sense; but for developing intelligence, and in its indirect consequences, hearing takes the precedence. The faculty of seeing, thanks to the fact that all bodies are coloured, brings tidings of multitudes of distinctive qualities of all sorts; whence it is through this sense especially that we perceive the common sensibles, viz. figure, magnitude, motion, number: while hearing announces only the distinctive qualities of sound, and, to some few animals, those also of voice. indirectly, however, it is hearing that contributes most to the growth of intelligence. For rational discourse is a cause of instruction in virtue of its being audible, which it is, not directly, but indirectly; since it is composed of words, and each word is a thought-symbol. Accordingly, of persons destitute from birth of either sense, the blind are more intelligent than the deaf and dumb.

    Source: J. I. Beare's translation, The Internet Classics Archive.

  • History of Animals:

    Viviparous quadrupeds utter vocal sounds of different kinds, but they have no power of converse. In fact, this power, or language, is peculiar to man. For while the capability of talking implies the capability of uttering vocal sounds, the converse does not hold good. Men that are born deaf are in all cases also dumb; that is, they can make vocal sounds, but they cannot speak. Children, just as they have no control over other parts, so have no control, at first, over the tongue; but it is so far imperfect, and only frees and detaches itself by degrees, so that in the interval children for the most part lisp and stutter.

    Vocal sounds and modes of language differ according to locality. Vocal sounds are characterized chiefly by their pitch, whether high or low, and the kinds of sound capable of being produced are identical within the limits of one and the same species; but articulate sound, that one might reasonably designate 'language', differs both in various animals, and also in the same species according to diversity of locality; as for instance, some partridges cackle, and some make a shrill twittering noise. Of little birds, some sing a different note from the parent birds, if they have been removed from the nest and have heard other birds singing; and a mother-nightingale has been observed to give lessons in singing to a young bird, from which spectacle we might obviously infer that the song of the bird was not equally congenital with mere voice, but was something capable of modification and of improvement. Men have the same voice or vocal sounds, but they differ from one another in speech or language.

    Source: D'Arcy Wentworth Thompson's translation, The Internet Classics Archive.

Moving on, the earliest mention of sign language in history comes from Cratylus, one of the more interesting Socratic dialogues. The dialogue's main theme is the relation between language and reality and it's part of the Theory of Forms corpus. In it, Socrates poses the following question (Plat. Crat. 422d & Plat. Crat. 422e):

Socrates
Well, then, how can the earliest names, which are not as yet based upon any others, make clear to us the nature of things, so far as that is possible, which they must do if they are to be names at all? Answer me this question: If we had no voice or tongue, and wished to make things clear to one another, should we not try, as dumb people actually do, to make signs with our hands and head and person generally?

Hermogenes
Yes. What other method is there, Socrates?

Socrates
If we wished to designate that which is above and is light, we should, I fancy, raise our hand towards heaven in imitation of the nature of the thing in question; but if the things to be designated were below or heavy, we should extend our hands towards the ground; and if we wished to mention a galloping horse or any other animal, we should, of course, make our bodily attitudes as much like theirs as possible.

Hermogenes
I think you are quite right; there is no other way.

A distinction between deafness and muteness can be found in Theaetetus, where while discussing the capacity to learn, Socrates tells us that anyone can show what they think, except if they are speechless or deaf from birth (Plat. Theaet. 206d & Plat. Theaet. 206e):

Socrates
The first would be making one's own thought clear through speech by means of verbs and nouns, imaging the opinion in the stream that flows through the lips, as in a mirror or water. Do you not think the rational explanation is something of that sort?

Theaetetus
Yes, I do. At any rate, we say that he who does that speaks or explains.

Socrates
Well, that is a thing that anyone can do sooner or later; he can show what he thinks about anything, unless he is deaf or dumb from the first; and so all who have any right opinion will be found to have it with the addition of rational explanation, and there will henceforth be no possibility of right opinion apart from knowledge.

The original text uses "ἐνεὸς" and "κωφὸς" (=deaf), the same words Aristotle used in On Sense and the Sensible, suggesting both Plato and Aristotle distinguished between muteness and deafness. A more accurate translation of the above quote would be:

unless he is speechless or deaf from birth

The fact that Plato refers specifically to "deaf from birth" suggests that he considers muteness to be the more serious issue, which is consistent with the Greek belief for the perfection of their language.

1 You can find more details in Chapter XVII: Diseases of the Ear, Nose and Mouth (page 107) of Cyril P. Bryan's translation of the papyrus - pdf version.
2 Miriam Lichtheim, Ancient Egyptian Literature, The University of California Press.
3 Page 6.

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Thank you for your informative answer!As I see there is no evidence in Aristotle's work about the distinguish I referred to. –  Ioanna Jan 17 '13 at 17:49
    
@Ioanna The earliest (solid) references to mutism I found are in the works of Girolamo Mercuriale. I couldn't find the full text for Aristotle's Problems, so I'm not really sure, but I did find a source that claims the Romans didn't distinguish between deafness and mutism –  Yannis Rizos Jan 17 '13 at 18:13
    
@Ioanna Scratch that, the distinction between deafness and mutism is evident in the first quote in my answer, no idea how I missed it. Updating the answer. –  Yannis Rizos Jan 17 '13 at 18:37
    
Your new edition is very helpful.Thank you! –  Ioanna Jan 17 '13 at 19:35
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