 In perception — Bergson demonstrates this point through his theory of pure perception — the image of a material thing becomes a representation. A representation is always in the image virtually. We shall return to this concept of virtuality below. In any case, in perception, there is a transition from the image as being in itself to its being for me. But, perception adds nothing new to the image; in fact, it subtracts from it. Representation is a diminution of the image; the transition from image to pure perception is “discernment in the etymological sense of the word,” a “slicing up” or a “selection” (Matter and Memory, p. 38). According to Bergson, selection occurs because of necessities or utility based in our bodies. In other words, conscious representation results from the suppression of what has no interest for bodily functions and the conservation only of what does interest bodily functions. The conscious perception of a living being therefore exhibits a “necessary poverty” ( Matter and Memory, p. 38).