This article was inspired by Georges Didi-Huberman’s keynote lecture “Que ce qui apparaît seulement s’aperçoit” delivered in 2015 at Charles University in Prague during the “Dis/appearing” conference organized by the Internationales Kolleg für Kulturtechnikforschung und Medienphilosophie. Didi-Huberman’s lecture consisted of various reflections concerning the meaning of the image as instances of flaring up and fading away. During his talk, Didi-Huberman used evocative images – recollections – which he had collected over the years; impressions while walking in the streets, melancholic musings (...) about love, and thoughts gathered from literature en route. From this, the article identifies seven cases through which Didi-Huberman has conceptualized images; the nymph, the butterfly, the passer-by, the surface, the dance, the silence, and sophrosyne. These cases attest to the influence of Aby Warburg on the writing of Didi-Huberman and, taken together, identify what these cases of the image have in common; namely, that images occupy an interspace: the fleeting instant of appearance/disappearance. Didi-Huberman explains images – “Dante’s Beatrice and Baudelaire’s fleeting beauty” as “the paradigmatic ‘passer-by.’” Through these cases, this article poetically draws the reader’s attention to what Didi-Huberman calls “non-knowledge”; those fleeting, mobile, paradoxical aspects of images that resist clear categorization and can be thought of as fireflies against the night sky. The article asks: is it possible to characterize this genre? To denominate the collection of thoughts that welcome the image as a witness to the history of thought? The study of images can be understood, following Giorgio Agamben’s interpretation of Aby Warburg’s oeuvre, as “the nameless science.”. (shrink)