How can we picture Time ? Traditional figuration freezes history through more or less meaningful scenes, while photography has a special ability to capture duration through movement blur.
There is a wide variety of types of blur, according to the distribution of relative motion between the camera and the subject. We set our attention on the blur obtained when the camera keeps a perfectly straight movement and a steady orientation : for instance when you install your camera on a tripod in a train for a long exposure.
A form of perspective then builds itself, where time and space are tightly interwoven, according to rules as rigorous as those of classical perspective. Leonardo da Vinci explained that the more an object is remote, the more its image shall be small and hazy; here we get the contrary : for the closer an objects stands, the more its blur is intense and extended.
With this dynamic perspective, the vanishing line is the line of the train travel, and blur becomes the sublimated material for building images.