ABSTRACT
In his Timaeus Plato devoted a brief space to describing the motion of the planets, where he distinguished that of Mercury and Venus from the rest of the planets. In the eleventh and twelfth centuries an interpretation of this text made it subject to the authority of Martianus Capella regarding the two inner planets, placing them on orbits around the sun. This interpretation is especially remarkable, because it occurred by means of diagrams inserted in the textual space. These diagrams appear as part of the text, not as glosses or a clearly labeled addition. They amount to a revision, or a rewriting, of Plato's text on this point.
