Nils Sigurd Aas was born in
Inderøy Municipality, in
Nord-Trøndelag county, Norway. He grew up in a family of prominent carpenters and furniture makers. His grandfather (also named Nils Aas) had established a carpentry workshop and water-driven sawmill in
Straumen. His father, Ivar Aas, took over the carpentry workshop at the death of the elder Nils Aas in 1927, and eventually won awards for his furniture work. The family also operated a
Sunday School out of the same building as the workshop, from 1933 to 1973. Aas' mother Inga Lie was from
Telemark and had come to the village in 1928, working for the local parish priest. Ivar and Inga met and married the same year, and the couple had five children: Marit (1929), Signe (1930), Nils (1933), Aslaug (1935) and Arne (1941). In his youth, Nils was an active as ski jumper and athlete. Nils was educated in the family trade of woodworking from an early age, and his earliest preserved work is a wooden sculpture of Bishop
Arne Fjellbu, made when Aas was 16 years old. After graduating from secondary school and after a short stint in military service, Aas applied to the
Norwegian National Academy of Craft and Art Industry in 1954 at the age of 21; his older sister, Marit, had started at the school two years earlier. His father marked the occasion by making a suitcase of wood as a farewell gift to the son. Aas studied at the school from 1954 to 1958, notably under Arne Bruland and Ivar Bell. Bell taught Aas calligraphy but ultimately pushed his pupil towards his eventual career as another type of artist, commenting "I think you are three-dimensional"; Aas took the advice and enrolled in sculpture classes the next term. Upon leaving the institute, Nils went on to study under sculptor
Nils Flakstad from 1958 to 1959. At the end of 1959, he accepted work with
Per Palle Storm. As a student, Aas had various commercial and industry jobs, particularly over his summers, including a stint at an advertising agency, and another as an assistant at the architectural and planning offices in
Steinkjer. Advertising did not appeal to him, but the experience in architecture further influenced his concepts for sculpture, particularly those designed for public spaces. In his last term at the National Academy, and for several years following, Aas began to work as an assistant to the abstract sculptor
Arnold Haukeland, who would have a substantial impact upon Aas's own style. Through Haukeland, Aas was introduced to the aesthetics of abstract form. He participated in the creation of two of Haukeland's most famous sculptures:
Elements Fountain at the
Bærum Municipality Town Hall and
Dynamics, a sculpture on the promenade at Sjølyst in Oslo. It was in Haukeland's studio that Aas created his own debut work (titled
Torso) for the
Autumn Exhibition in Oslo. ==Art works==