We select our furniture to serve as visible symbols of our taste, wealth, and social position. We often choose our residences on the basis of a feeli… - S. I. Hayakawa

Of all forms of symbolism, language is the most highly developed, most subtle, and most complicated. It has been pointed out that human beings, by agreement, can make anything stand for anything. Now, human beings have agreed, in the course of centuries of mutual dependency, to let the various noises that they can produce <span style="color:green" title="with their lungs, throats, tongues, teeth, and lips systematically">[...] stand for specified happenings in their nervous systems. We call that system of agreements language. For example, we who speak English have been so trained that, when our nervous systems register the presence of a certain kind of animal, we may make the following noise: "That's a cat." Anyone hearing us expects to find that, by looking in the same direction, he will experience a similar event in his nervous system -- one that will lead him to make an almost identical noise. Again, we have been so trained that when we are conscious of wanting food, we make the noise "I'm hungry." </SPAN>

We all inherit a great deal of useless knowledge, and a great deal of misinformation and error (maps that were formerly thought to be accurate), so that there is always a portion of what we have been told that must be discarded. But the cultural heritage of our civilization that is transmitted to us -- our socially pooled knowledge, both scientific and humane -- has been valued principally because we have believed that it gives us accurate maps of experience. The analogy of verbal words to maps is an important one [...]. It should be noticed at this point, however, that there are two ways of getting false maps of the world into our heads: first, by having them given to us; second, by creating them ourselves when we misread the true maps given to us.

Language, that is to say, is the indispensable mechanism of human life -- of life such as ours that is molded, guided, enriched, and made possible by the accumulation of the past experience of members of our own species. Dogs and cats and chimpanzees do not, so far as we can tell, increase their wisdom, their information, or their control over their environment from one generation to the next. But human beings do. The cultural accomplishment of the ages, the invention of cooking, [...] and the discovery of all the arts and sciences come to us as free gifts from the dead. These gifts, which none of us has done anything to earn, offer us not only the opportunity for a richer life than our forebears enjoyed but also the opportunity to add to the sum total of human achievement by our own contributions, however small they may be.