Aside from the identities of the philosophers shown, many aspects of the fresco have been interpreted, but few such interpretations are generally accepted among scholars. The popular idea that the rhetorical gestures of Plato and Aristotle are kinds of pointing (to the heavens, and down to earth) is a likely reading. However Plato’s Timaeus--which is the book Raphael places in his hand--was a sophisticated treatment of space, time and change, including the Earth, which guided mathematical sciences for over a millennium. Aristotle, with his four elements theory, held that all change on Earth was owing to the motions of the heavens. In the painting Aristotle carries his Ethics, which he denied could be a scientific study.
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