Artists do not create in a void, their activity is not unmotivated to their times. To have new creativity, progress in thought and in technique must be concurrent. The problem of plastic space is not a problem of content and form, but adopting content to form. The new means of making man dominate nature, involved a complete change in the vision of the spatial world. Problems of the relationship between man and the universe, and between individuals themselves are the problem the Impressionists tackled. Some of them faced the modern problem of the relations between form and light, others faced the problem of the triangulation of space, and still others faced the modern problem of tactile values or the poly-sensorial representation of space.