This thesis argues that attitudes of inhospitality operate subtly in politics, in our religious beliefs and practices, and in our understandings of who we are. Consequently, the question of hospitality - what it is and what it signifies - is an urgent one for us to address. In this thesis I examine and outline the hermeneutics-deconstruction debate over the experience of otherness and what it means to respond to others ethically (or hospitably). In the first two chapters I defend the importance of properly understanding the ethics of both Emmanuel Levinas and Jacques Derrida. Against the concerns of Paul Ricoeur and Richard Kearney, I maintain that a Levinasian and Derridean insistence on answering to the call of an unconditional hospitality is the best way forward in our attempt to respond with justice to strangers. Next, by engaging Martin Hagglund's objection to an ethical reading of Derridean unconditionality, I give attention to the theme of negotiation in Derrida's later work, a theme which I take to be the central feature of his account of hospitality. I conclude by proposing five theses concerning hospitality. These theses provide an overview of the main themes discussed in this thesis and once more address the various tensions internal to the concept of hospitality.