Duga’s work is based on spontaneity and instinct. He is perpetually questioning the human being, for endless work because he knows that his questions will remain forever unanswered. It is Man who interests him, his inner life, his sufferings, his happiness, his joys, his sadness, his inconsistencies, his fears, his solitude, his demons, his social life... His artistic approach is based on spontaneity, instinct. (mixture of neo-expressionism, outsider art, free figuration, children's art) .