"In front of a window seen from inside a room, I placed a painting representing exactly that portion of the landscape covered by the painting. Thus, the tree in the picture hid the tree behind it, outside the room. For the spectator, it was both inside the room within the painting and outside in the real landscape. This is how we see the world, we see it outside ourselves, and at the same time we only have a representation of it in ourselves. In the same way, we sometimes situate in the past that which is happening in the present. Time and space thus lose the vulgar meaning that only daily experience takes into account"