Arne Dekke Eide Næss is widely regarded as the foremost Norwegian philosopher of the 20th century, and is the founder of the deep ecology. The central idea of Deep Ecology is that we are part of the earth, rather than apart and separate from it. His philosophical work focused on Spinoza, Buddhism and Gandhi. He was the youngest person to be appointed full professor at the University of Oslo. Næss, himself an avid mountaineer, is also known as the uncle of mountaineer and businessman Arne Næss Jr. (1937–2004) and the younger brother of shipowner Erling Dekke Næss.
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