On the other hand, the artist has much to do in the realm of color construction, which is so little explored and so obscure, and hardly dates back an… - Robert Delaunay

Light in nature creates movement in color. The movement is provided by the relationships of uneven measures, of colors contrasts among themselves and constitutes Reality [In this quote Delaunay is referring to his series 'Window'-paintings', which he had started in 1912].

'Simultaneousness' is a technique. Simultaneous contrast is the most up-to-date honey of this technique in this field. Simultaneous contrast is visible depth – Reality, Form, construction, representation. Depth is the new inspiration. We live in depth, we travel in depth. I’m in it. The senses are in it. And the mind is too.

I can see the black spots of the sun [remark to Sonia Delaunay, his wife and female artist].