Form of Life

Form of life (Lebensform) is the term Ludwig Wittgenstein uses in the Philosophical Investigations to name the background of shared practices, interests, and natural responses within which language games acquire their point. It is not a theory, not a definition, and not an empirical claim about human nature — it is a reminder that language does not float free of the activities and biological regularities that make it useful.

To share a form of life is to find the same things natural, the same responses appropriate, the same gestures intelligible. It is what makes agreement in judgments possible before agreement in opinions. The concept blocks the philosophical impulse to ground language in something more fundamental — mental representations, logical structure, or biological instinct — by showing that these supposed foundations themselves only function within a form of life. The concept has been taken up in anthropology and sociology as a way of describing how cultural practices constitute the conditions of intelligibility, and in cognitive science as a challenge to the idea that cognition can be studied in isolation from embodied social practice.