Abstract
In this article I shall largely make use of terms like “responding,” “responsive,” and “responsivity.” These terms are not part of traditional philosophy. They became indispensable for my own thinking when I tried to develop a theory of radical Fremdheit, of alienness or otherness. Hence I came to a sort of responsive phenomenology that does not replace current variants of phenomenology, but sets a new tone. This is what I try to show in my article. I shall proceed in four steps. In the first step, dealing with the formation of the theory, I try to show how our experience of radical otherness leads to the key concept of responsivity. In the second step, I shall describe the main features of responsivity and its pathological deviations. In the third step, this perspective will be expanded by referring to co-affection and co-responsivity as elements of proto-sociality. The fourth and last step will offer a practical outlook, raising the question to what extent responsivity can be organised and institutionalised.