In my contribution i would like to consider a thesis of Reinhard Lauth, according to which Fichte’s Doctrine of Science must be properly characterized as theory of the Bilden (formation), as “Bildenslehre”. In his late Berlin lectures Fichte understands Wissen (knowledge), in its actuality, as “Bild” (image). Knowledge is image and identifies itself as an image. The image as such shows a reflective and relational structure. The image presents an essential self-reflexivity and does not exist in isolation, but is a relationship to something else which Fichte designates as being, life, light, one, God. The basic idea of Fichte is that we have access to reality (to being) only through the image and in it, within a transcendental unity of being and thinking that must be conceived not as a fact (Tatsache), but as an act (Tathandlung). The term and concept Bilden (formation) expresses well the dynamic and active nature characteristic of the image. i try to explain this on the basis of certain passages of the Doctrine of Science of 1804 (second exposition).