This happened in 1912. Cubism was in full force. I made paintings that seemed like prisms compared to the Cubism my fellow artists were producing. I was the heretic of Cubism. I had great arguments with my comrades who banned color from their palette, depriving it of all elemental mobility. I was accused of returning to Impressionism, of making decorative paintings, etc... I felt I had almost reached my goal.

In: 'First Notebook, 1939', in The New Art of Color: The Writings of Robert and Sonia Delaunay, Viking Press, 1978; as quoted on Wikipedia / Delaunay