The aim of this thesis is to bring together two different approaches on the concept of sketches in an attempt to broaden the understanding of what a sketch is and does. The first of these approaches is based on a notion of generative art presented by professor of art history and founder of Skissernas museum in Lund Ragnar Josephson (1891-1966). The second approach is situated in philosopher Marcia Sá Cavalcante Schubacks collection of phenomenological essays Att tänka i skisser: essäer om bildens filosofi & filosofins bilder (2011). By letting these two theories and Henri Matisse’s Chapel du rosaire and some of his sketches speak with each other my thesis establishes that the sketch is a non static motion towards shape.