Hubert Robert: Painting as a source of knowledge. I will admit that my passion for painting is equal to my passion for architecture, although I have practiced and taught architecture for many years and, for fear of embarrassment, never taken my personal attempts in the art of painting seriously. During my own architectural studies, a faculty member who was also a graphic artist, introduced me to the foundation of the science of color. She enticed me to learn how the subjectivity of color could trigger sensations; this would become the source of a lifelong astonishment and appreciation of color and painting.