Why humans are the only species capable of shaping their own world-open environment

Ideas & Philosophy · Published 3 October 2026 Swipe more like this →

In short: Arnold Gehlen argued that humans lack the evolutionary specialisation of animals, leaving us with an excess of impulses. To survive, we create our own cultural environments. This unique world-openness grants us self-control and the power to act through language, but it also risks a profound sense of self-destabilisation.

Born in 1904, Arnold Gehlen was a prominent German philosopher and sociologist whose work bridged anthropology and social theory. Influenced by thinkers like Max Scheler and George Herbert Mead, Gehlen developed a distinctive view of the human condition. His seminal 1940 work, Der Mensch, posited that humans are defined by Weltoffenheit, or world-openness. Unlike animals, which are tethered to specific environments by their biology, humans possess the flexibility to adapt to diverse settings. This capacity allows us to construct culture and institutions, acting as a buffer against our own unchanneled impulses.

Gehlen’s career was marked by political complexity. He joined the Nazi Party in 1933 and signed a vow of allegiance to the regime, though he is often described as a political opportunist. After the war, he underwent denazification and continued his academic career, eventually becoming a sharp critic of the protest movements that emerged in the late 1960s. His later work, particularly Moral und Hypermoral, has seen a revival since the mid-2010s, as contemporary scholars revisit his warnings regarding the trajectory of Western politics.

Beyond his anthropological theories, Gehlen was an early proponent of speech act theory and a keen observer of the industrial age. By 1952, he adopted the term post-histoire from the Belgian thinker Hendrik de Man to describe an epoch defined by stability and the exhaustion of utopian development. He famously suggested that in this era, humanity should simply 'make do with what you have.' His influence persists today, shaping the work of sociologists like Niklas Luhmann and Peter L. Berger, who have built upon his theories of institutions and social structure.

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