The holy catholic and apostolic Church, then, teaches the existence at once of a Father: and of His Only-begotten Son, born of Him without time and flux and passion, in a manner incomprehensible and perceived by the God of the universe alone: just as we recognise the existence at once of fire and the light which proceeds from it: for there is not first fire and thereafter light, but they exist together. And just as light is ever the product of fire, and ever is in it and at no time is separate from it, so in like manner also the Son is begotten of the Father and is never in any way Text, μηδ᾽ ὅλως. Variant in many codices is μηδαμῶς, as in the previous sentence. separate from Him, but ever is in Him Greg. Naz., Orat. bk. i., Cont. Eun., p. 66; Cyril, Thes., assert. 5.. But whereas the light which is produced from fire without separation, and abideth ever in it, has no proper subsistence of its own distinct from that of fire (for it is a natural quality of fire), the Only-begotten Son of God, begotten of the Father without separation and difference and ever abiding in Him, has a proper subsistence of its own distinct from that of the Father.