Algo le ha sido presente, Derrida y testimonio

"whoever bears witness does not bring a proof; he is someone whose experience, in principle singular and irreplaceable (even if it can be cross-checked with others to become proof, to become conclusive in a process of verification) comes to attest, precisely, that some 'thing' has been present to him".

Derrida, 'A self-unsealing poetic text: poetics and politics of witnessing', en Clark, Michael, Revenge of the aesthetic: the place of literature in theory today, University of California press, Berkeley, 2000. p.190