" The gray butterfly understands so well the event "to be hidden" that, by remaining in the same place, plastered to the trunk of a tree, it covers the whole distance separating it from the "to invigorate" of the black butterfly; it also causes the other event to resonate as individual, within its own individuality as an event, and as a fortuitous case. "

― Gilles Deleuze , The Logic of Sense