After looking at the evolution of pigments for the color blue, Roald Hoffman, Frank H. T. Rhodes Professor of Humane Letters Emeritus at Cornell University and recipient of the 1981 Nobel Prize in Chemistry, will discuss how scientific articles relating to chemistry also deal with representation of an underlying reality, and face questions that are essentially artistic. The presentation will address the spiritual ground shared by art and a science as it poses the question Is there an analogue in science to abstract art?