Should a politician act upon practical necessity or be guided by theory? Cicero (1st century BCE) has several philosophers debate this question in ?On Public Affairs? (?De re publica?), ending with the ?Dream of Scipio?, a vision of heavenly glories awaiting selfless politicians. Macrobius (5th century CE) commented on the 'Dream? through the lens of contemporary philosophy which argued a superior transcendent reality. The commentary?s mysticism and its views of geography (proposing a round earth) appealed to medieval theologians. This manuscript?s handwriting style and inclusion of verses by Rhygyfarch (Ricemarch), poet of St David?s, link it with Wales. At the red letter ?S?, Macrobius begins a section on the zodiac and the ?ethers? (revolving spherical ?layers? of the heavens which carried the moon, sun, planets and stars). The diagram lays it all out, showing the earth at the centre of the ethers with planets--the moon and sun were considered planets--revolving around it.