Álvarez Enparantza studied engineering in Bilbao, and linguistics in Paris. In 1957, he became a corresponding member of the Euskaltzaindia, which adopted most of his proposals on the orthography and morphology of Standard Basque. In 1993 he became a member of its Commission on Pronunciation. His name was put forward twice to become a full member of the Euskaltzaindia but he was turned down for political reasons. When he was going to be proposed for a third time, he himself turned down the proposal. He was a major contributor to the standardisation of Basque. His philosophy was based on the following points:
that any subject could be discussed in an understandable way in any language, based on "trying, time, and intelligence";
and that the main feature, among others, that should identify a person as Basque should be knowledge of the Basque language.
He was also a well-known writer and linguist under the pseudonyms Larresoro, Igara and Usako. He was a writer influenced by existentialism of Kierkegaard, Unamuno and Sartre, and also by the writer Bertrand Russell. He has had many books published, mostly to do with the Basque language and its grammar. He has also written novels and political essays. His work Leturiaren egunkari ezkutua is considered the first modern novel written in Basque and makes a clear dividing line in Basque literature. Other work included the novels Haizeaz bestaldetik and Putzu ; the influential essays Huntaz eta hartaz, Hizkuntza eta pentsakera and Euskal Herria helburu, and the academic works Euskal fonologia, Euskal azentuaz and Elebidun gizartearen azterketa matematikoa. In 1968 he won the Txomin Agirre award for his novel Elsa Scheelen. He also won the Andima award in Caracas in 1969 for books on teaching mathematics. He won the Silver Lauburu for his book Euskal Gramatika in Bilbo in 1980. In the 1970s Txillardegi co-founded the Euskal Herrian Euskaraz Basque language movement. In 1982 he began lecturing in the University of the Basque Country, of which he later became a professor emeritus. The database of the Basque scientific-intellectual community :eu:Inguma |Inguma shows references to 122 products created by Txillardegi.
Political activity
A member of the Basque Nationalist Party in his youth, he promoted the defence and study of the Basque language as the basis of Basque identity. After becoming disillusioned with the PNV, Txillardegi was one of the founders of ETA in 1959, together with a group of young nationalists and was the visible leader of the cultural branch of the movement. In 1961 he fled into exile, in Paris and Brussels, returning in 1967. In 1976 he and Iñaki Aldekoa formed a political party, the Euskal Sozialista Biltzarrea. Txillardegi participated in the foundation in 1977 of Herri Batasuna and was elected senator for the abertzale coalition in the first elections. Coming to believe that the armed struggle was unviable, for a time he was active in Aralar. In the general elections of 2008, he announced his Senate candidacy for the Eusko Abertzale Ekintza party for the precinct of Guipúzcoa.
