Response to the article of Luis de Eleizalde on a conference that was imparted by Julio Urquijo at the Biarritz Congress. He denies having said that the Iberian theory is a popular tradition in the Basque Country, he refers to the fact that the ancient writers considered this fact, that is to say, that it is a traditional opinion. Also it considers that the nationalists are against the Iberian theory without having studied the facts provided by Iberian theory supporters