Yet another definition sees language as a system of communication that enables humans to cooperate. This definition stresses the social functions of language and the fact that humans use it to express themselves and to manipulate objects in their environment. This view of language is associated with the study of language in a functional or pragmatic framework, as well as in socio-linguistics and linguistic anthropology. In the Philosophy of language these views are often associated with Wittgenstein’s later works and with ordinary language philosophers such as G. E. Moore, Paul Grice, John Searle and J. L. Austin.