I saw a tweet a few days back that was a quotation from the English Puritan, George Swinnock’s The Blessed and Boundless God, in which Swinnock notes, “God is a sphere whose center is everywhere and whose circumference is nowhere.” This quotation, Swinnock admits, comes from an unknown “heathen” author. Though Swinnock does not name the source or the book, he is most likely quotting from the Liber XXIV Philosophorum, that is, The Book of the Twenty-Four Philosophers. The second principle head of this work states: DEVS EST SPHAERA INFINITA CVIVS CENTRVM EST VBIQUE, CIRCVMFERENTIA NVSQVAM, which translates, “God is an infinite sphere, whose center is everywhere, and whose circumference is nowhere.”
The metaphor of God as a sphere was bequeathed to English theologians of the 17th century both by the Liber XXIV Philosophorum itself and by Medieval authors who quoted from it. Nicholas of Cusa was one Late Medieval author who made use of this phrase. In his De Docta Ignorantia I.23, Cusa argues that the metaphor of an infinite sphere is appropriate to describe the existence of God (Sicut sphaera infinita est penitus in actu et simplicissima, ita maximum est penitus in actu simplicissime). English theologians, like Cusa, found this metaphor to be quite useful. Joseph Hall, for example, states in a sermon, “O God, thou art an intelligible sphere, whose centre is everywhere, whose circumference is nowhere but in thyself.” Another Puritan, Peter Sterry, states, “God is that Sacred Circle of All-Being, of Infinitness, of Eternity, whose Center is everywhere, in the smallest Point of Things; whose Circumference is no where bounded” (The Appearance of God to man… London, 1710, p. 300).
There is no record or evidence of the Liber XXIV Philosophorum before the Medieval period. Swinnock, like his European predecessors would have thought that the book was composed by the famed Hermes Tristmegistus. Modern historians reject that claim, yet they are divided over the exact lineage of the book. Some argue that it was composed in Antiquity from various quotations taken from Aristotle, Plotinus, Proclus and others. Kurt Flasch, however, argues that there is little evidence for this composition in the text itself. No matter the date of composition, the author of the book was clearly influenced by Aristotle and later Neoplatonic authors. From the Liber XXIV Philosophorum, then, comes the idea of God as an infinite sphere, an idea that would fascinate Late Medieval authors as well as Puritans and also those early modern authors who would seek to wed theology to mathematics.