In 1726 he was a student of the Utrecht University.

His last post was president of Utrecht University, from 1986 until 2003.

From 1988 to 2011 he was professor at Utrecht University.

From 1967 he was professor at the University of Utrecht.

From 1960 to 1962 he then worked at the University of Utrecht as a scientific staff member.

Later, he studied four years at the University of Utrecht.

He was professor of philosophy at Utrecht University from 1846 to 1889.

From 1955 until his retirement in 1988 he was professor at the University of Utrecht.

As from 1984 she held various functions with the University of Utrecht.

He holds a law degree from the University of Utrecht.