He attended high school in Vaduz before studying law in the University of Freiburg from 1964, where he graduated with a doctorate in 1972.

[2] As a result, Wille was appointed Deputy Prime Minister of Liechtenstein on 2 February 1986, under the government of Hans Brunhart, succeeding Hilmar Ospelt.

[3][4] Additionally, he was a government councillor with the roles of interior, culture, youth, sport, agriculture, forestry, environment, and justice.

[1] During his term in office, Liechtenstein became a full member of the United Nations in 1990 following Security Council Resolution 663.

This was promoted by a letter from Hans-Adam II to Wille that stated that he would not appoint him to a public office due to Wille expressing the opinion in a speech that the Liechtenstein state court should hold a final say over the prince regarding disputes with the constitution of Liechtenstein.