 He continued to give these radio talks till 1988, concluding each week with the words "sachlich, kritisch und optimistisch wie immer" ("loosely "as ever, factual, critical and optimistic""), a motto the first part of which he would later re-activate as the title for his 1999 autobiography.This was the only regular programme dealing expressly with economics in the schedules.Between 1965 and 1978 he appeared regularly on "Prisma", a long-running DFF television programme for which he was employed as the economic commentator, also including in his presentations some political aspects of topics covered and, on occasion hints of political criticism in his analyses.