Literacy is the ability to read and write. Broadly, literacy may be viewed as "particular ways of thinking about and doing reading and writing" with the purpose of understanding or expressing thoughts or ideas in written form in some specific context of use. In other words, humans in literate societies have sets of practices for producing and consuming writing, and they also have beliefs about these practices. Reading, in this view, is always reading something for some purpose; writing is always writing something for someone for some purpose. Beliefs about reading and writing and their value for society and for the individual always influence the ways literacy is taught, learned, and practiced.

The history of writing traces the development of writing systems and how their use transformed and was transformed by different societies. The use of writing prefigures various social and psychological consequences associated with literacy and literary culture.