From 1882 he occupied the position of professor at that institution.

From 1977 to 1986, he held the position of professor of biblical studies.

In 2002 he was given the position of full professor.

Nelson was officially promoted to the position of professor in 1958.

Harris rose to the position of full professor at York in 1971.

He held the positions of president and professor of Government from 2000 to 2006.

In 1976, he rose to the position of professor of graphic technology.

In 1952 he was promoted to the position of professor.

Again he held the position of extraordinary professor in Innsbruck.

Despite his early age, he was many a time offered the position of professor.