Abstract: The aim of this work is to propose a concept of threshold intended both as a line that separates and that, at the same time, unites and also as a place that defines the identity of something in relation to its diversity. In this regard, we will try to delineate what Waldenfels calls “a thought of the threshold”, that is a thought that tries to account for the question of otherness. We will analyze the figure of the foreigner in the thought of Simmel and Schütz and that of the stranger in the thought of Waldenfels. The thesis we want to sustain is that otherness does not come from an external dimension but from an internal dimension. In this way, it is possible to prepare policies of openness and welcome and to outline the physiognomy of a thought of hospitality and welcome.
Abstract: The paper aims to investigate the Italian noun “soglia” (threshold). The history and evolution and the conceptual meaning of the term is examined through time, with examples linked to the term itself and to other words – as limit and boundary – with Latin and Tonic Greek etymology, related to the noun itself. Some affine locutions are also discussed. The salient ambiguous aspects of the etymological roots and of the constructs are identified. The noun Soglia, as a concept, adapts its meaning, according to any thematic contexts in which it is used. It does not allow itself to be framed or exhausted by philosophical, historical, literary, astronomical, scientific or mathematical topic. It may refer to multiple subjects but cannot be considered in any univocal meaning, neither simply as a boundary that closes, nor as a threshold, that opens. Some contents, derived from contemporary physics, leads the author to propose a semantic affinity between psychological and physical meaning of soglia, and mentalizes the noun itself, also referring to G. Leopardi’s thought.