 God’s mind, understood as the logos or verbum, contains in one undivided Form all the reasons for every individual thing. These reasons (rationes, logoi) are productive of the things of which they are the reasons. Their number is infinite and none has priority over the other, e.g., Being is not prior to Goodness, or vice-versa. Each is a divine theophany, a way in which the divine nature is manifested. The very nature of these Causes is to flow out from themselves, bringing about their Effects. This “outflowing” (πρόοδος, proodos; processio, exitus) creates the whole universe from the highest genus to the lowest species and “individuals” (atoma). In his understanding of this causal procession, Eriugena accepts Neoplatonic principles: like produces like; incorporeal causes produce incorporeal effects; an eternal cause produces an eternal effect. Since the causes are immaterial, intellectual and eternal, so their created effects are essentially incorporeal, immaterial, intellectual, and eternal. Eriugena, however, thinks of cause and effect as mutually dependent, relative terms (Periphyseon, V. 910d–912b): a cause is not a cause unless it produces an effect, an effect is always the effect of a cause.