Q&A: What do the three figures on the Bing Wing facade represent?

Question:

There are three figures on the facade above Green Library's Bing Wing portal. Who or what do they represent?

Answer: 

Bing Wing Facade

There are three roundels above the Bing Wing portal, each housing a relief figure. The figures represent (from left to right) Art, Philosophy, and Science. They were executed by San Francisco sculptor Edgar Walter; the exact date of their design and creation is unknown. Scholars and librarians can take pleasure in the fact that the figure representing Philosophy is shown with an open book in his hands.