Has a son from his first marriage and two daughters from his second marriage.
Married partner Connie Palmen after a relationship of 11 years and 11 months on November 11th 2009 in Amsterdam.
Member of the Dutch Senate from September 13th, 1983 to June 4th, 1986 for D66 (Democrats 66).
Member of the Dutch House of Representatives from February 23rd, 1967 to June 8th, 1977, from June 3rd, 1986 to August 22nd, 1994 and from May 19th, 1998 to August 18th, 1998 for D66 (Democrats 66).