The Cambridge Encyclopedia of Language states: "Every culture which has been investigated, no matter how 'primitive' it may be in cultural terms, turns out to have a fully developed language, with a complexity comparable to those of the so-called 'civilized' nations."
The Cambridge Encyclopedia of Language yi ri: "Ndhavuko wun'wana ni wun'wana lowu kambisisiweke, ku nga khathariseki ndlela leyi marito ya wona ma nga vaka ma 'olove' ha yona, wu ni ririmi leri heleleke, leri twalaka ku fana ni tindzimi ta matiko lama ku vuriwaka leswaku ma 'hluvukile.'"