Loose sketches, diagrams, and drawings reveal insights into the artist’s finished paintings and his theories, such as Afnemend licht is toenemend donker.  Toenemend licht is afnemend donker. [Dwindling light is expanding darkness. Expanding light is dwindling darkness.] This collection of sketches contains references, calculations, colour studies, and new ideas, underscoring Jef Verheyen’s calibre as a contemplative artist.