There are grounds for taking Plato's agenda of searching for definitions to be ironic, and he points toward good arguments for being wary of trust in definitions.

Philosophers disagree, with some rare exceptions. One of those exceptions is the broadest-brush account of what language is. Language is a system of signs used for the communication of --well, and here the agreement begins to break down--thoughts, ideas, messages, propositions or propositional contents, intentions, and a host of technical terms offer themselves to chink the cracks. A list of philosophers subscribing would be impossible to complete. Locke, Carnap, Augustine, Hobbes, Fodor, Katz, Chomsky, Derrida, --well, and on and on. Easier (...) would be to list those who dissent. Heraclitus, Wittgenstein, maybe J.L. Austin, Frank Ebersole, and NOT on and on. The first chapter lays out the view that language is a system of signs in sympathetic terms. The second provides a selection of what are usually called “ordinary language” arguments against the view--reminders about how the view requires us to think in terms which are not consistent with how we think about language and signs when we are not doing philosophy. Those arguments have been unpersuasive among philosophers, and Chapter Three begins the work of investigating separate pieces of the view in detail. Chapter Three takes up an argument for the view which is familiar among philosophers, using Jerry Fodor’s formulation: we cannot be thinking in a public, natural language, because animals and preverbal infants think with no such language. I show this argument is not an argument at all but is rather an expression of the view in question. Chapter Four takes up the argument that the relations between particular words and their meanings is arbitrary or conventional rather than natural or necessary, otherwise there would be only one language among mankind. I argue that the alternatives (conventional vs. natural or necessary) are both generated by taking the division between words and their meanings to be the division between signs and signified--in other words, the question is a result of adopting the view of language as signs. Attempts to argue for the legitimacy of the question without taking the view for granted only serve to call it into question more. In Chapter Five I investigate whether we talk in order to communicate something which is otherwise hidden and invisible. We are tempted to think that you and I talk because I cannot read your mind or you mine. Though Wittgenstein has a famous set of comments on the notion of a private language, it remains a strong temptation to think that language gives public form to something (thoughts, ideas, intentions, feelings, content, meaning) which without language would be unknowable to all but the person whose something it is. Examples help point to the incoherence of this view and show that even if it were not incoherent, remedying the invisibility of those internal whatnots would still leave us with a need for language. Chapter Six takes up a hoary question about boundaries of effability--the possibility that there are limits to what can be said which are more restrictive than what can be thought or felt. The account of language as signs provides one easy way to make sense of this idea, but investigation into examples shows the problem is not one that makes sense unless we just grant that account. Chapter Seven investigates how to make sense of the notion that there are things which are in language and other things which are not. I spell out how the view of language as signs gives us a way to think this, and then show how one reaction to finding problems with the notion resonates with Wittgenstein’s early work and with some work of Jacques Derrida, who bite similar bullets and agree that everything is language, that the limits of language are the limits of our world. I then subject that reaction to critical investigation using examples, which reveals their reaction as a rear-guard attempt to save the view of language as signs. Chapter Eight uses examples as guides toward alternative views of language, feeling our way toward what language might be if it is not a system of signs. Finally, the appendix takes up what I take to be the serious arguments against the methods I use in this work, the first two articulated by John Searle (“the assertion fallacy”) and H. P. Grice (“conversational implicature”), and another the generally unspoken belief that philosophical work is like scientific work. (shrink)

Becoming knowledgeable about good arguments through arguing, through focused involvement and educational progress through stages of deepeningunderstanding, is a logically prior requirement to being able to give a set of criteria or a definition of a good argument. So rather than seek a definition or criteria, we should seek expertise, wisdom regarding what we were tempted to define, through the long, slow and gradually deepening involvement in thinking things through.

Becoming knowledgeable about good arguments through arguing, through focused involvement and educational progress through stages of deepeningunderstanding, is a logically prior requirement to being able to give a set of criteria or a definition of a good argument. So rather than seek a definition or criteria, we should seek expertise, wisdom regarding what we were tempted to define, through the long, slow and gradually deepening involvement in thinking things through.