Augustine of Hippo
Patristic
A.D. 354–430
“The same meaning is to be understood in the case of Moses when the Lord said to him, "I will take of your spirit and give to them," that is, I will give to them of the Holy Spirit which I have already given to you. If that which is also given has the giver for its principle, because it did not receive from any other source than that which proceeds from him, then we have to confess that the Father and the Son are the principle of the Holy Spirit, not two principles. But as the Father and the Son are one God, and in relation to the creature are one Creator and one Lord, so they are one principle in relation to the Holy Spirit. But in relation to the creature, the Father, the Son and the Holy Spirit are one principle, as they are one Creator and one Lord.”