Expositio super symbolum Nicenum
Alan of Lille (1120–1202)
A commentary on the Nicene Creed by Alan.
Prologus I: Expositio super symbolum Nicenum.
Caput I: Credo in unum Deum.
Caput II: Patrem.
Caput III: Omnipotentem.
Caput IV: Factorem caeli et terrae, visibilium omnium et invisibilium.
Caput V: Et in unum Dominum.
Caput VI: Iesum Christum.
Caput VII: Filium Dei unigenitum.
Caput VIII: Et ex Patre natum ante omnia saecula.
Caput IX: Deum de Deo, lumen de lumine, Deum verum de Deo vero.
God from God, light from light, true God from true God.
Against the aforementioned heretics who denied that the Son was true God.
Light from Light.
Both the Father and the Son and the Holy Spirit are called light and lux, as it were illuminating and able to be illuminated. But nevertheless Christ is properly called lux according to the divine nature, lumen according to the human, because lumen is lux in a vessel of clay.
True God from true God.
What follows is nothing but an explanation of what precedes. He is called true God because immutable, because certain in his promise.