He served as the country's Minister for Education and Research from October 1969 to March 1972 in Cabinet Brandt I under Chancellor Willy Brandt.
His descendants live in Canada and the Netherlands.
He was the oldest former minister of all time in Germany until his death on 16 February 2008.
[4] In 1994 Leussink was elected as Foreign Honorary Member of the American Academy of Arts and Sciences.
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