At the beginning of the 20th century statexrents about open space provision in Germany re closer to belief than to science. In the 193o's scientific and social scientific approaches to university education in open space planning re brutally suppressed by deeply anti-scientific, racist, and nationalist National Socialism After WW II, science and the history of garden styles became part of the curriculum. In the late 1 96o 's social science was added but was considered Threatening to the accepted beliefs. Then ecology emerged and was accepted as 'scientific' because it was free from social science and history and was considered to be free from ideology. Avoiding the cul-de-sac of an ideology-free ecology by identifying the ideology of ecology from a social science point of view could open up a new perspective for garden and landscape architecture in a deiucratic society.