 Complete the following phrase:  In the 1930s he became a noted public debater. He issued the 1934 book Rasepolitikk og reaksjon, and wrote with the purpose of medicinal and hygienic enlightenment in the publications Populært Tidsskrift for Seksuell Oplysning which he edited and Arbeidermagasinet. He was also a popular radio speaker and lecturer. In 1938 he was appointed to the vacant position as director of the Norwegian Directorate for Health. When World War II 