 In 1902 he started at the Universite Libre de Bruxelles (ULB), where he obtained a law degree in 1907.Already as a student he had become interested in the Flemish movement, like his father Julius Hoste Sr.While he was a student, he was a member of "Geen Taal, Geen Vrijheid", and together with Nico Gunzburg and Frans Van Cauwelaert, he founded the "Algemeen Vlaams Studentenbond".