 The first development towards language is that the people come to realize that they can communicate their needs to each other better if they agree to label some objects and concepts with vocal sounds. This sets up a conventional correlation between simple (i.e., uncompounded) primary concepts and words, and eventually this correlation comes to be accepted by the whole community. The words are said to “signify” the concepts to which they are correlated. Al-Fārābī envisages that a lawmaker will regulate the correlation and add some words to it for the benefit of the community ([Letters] (120) 138.4–8). Thus a national lexicon is created; the sounds that are used form a national alphabet. 