A person who is a good and true Christian should realize that truth belongs to his Lord, wherever it is found, gathering and acknowledging it even in pagan literature, but rejecting superstitious vanities and deploring and avoiding those who ‘though they knew God did not glorify him as God or give thanks but became enfeebled in their own thoughts and plunged their senseless minds into darkness. Claiming to be wise they became fools, and exchanged the glory of the incorruptible God for the image of corruptible mortals and animals and reptiles’ [Rom. 1:21-3].
~ Augustine of Hippo, In De Doctrina Christiana, Book II
Any statements by those who are called philosophers, especially the Platonists, which happen to be true and consistent with our faith should not cause alarm, but be claimed for our own use, as it were from owners who have no right to them.
~ Augustine of Hippo. In De Doctrina Christiana
Gold from Egypt is still gold.
~ Augustine of Hippo
All truth is God’s truth.
~ Arthur F. Holmes
Whatever things were rightly said among all men are the property of us Christians.
~ Justin, 2 Apology 13
Sometimes the slogan “All truth is God’s truth” is used to justify dealing in any sphere of knowledge as an act of worship or stewardship. The impression is given that just knowing God’s truth and recognizing it as such is a good thing, even a worthy end. But the problem with this is that the devil does it.
“If anyone imagines that he knows something, he does not yet know as he ought to know. But if anyone loves God, he is known by God.” (1 Corinthians 8:2-3). Which I take to mean that until we know in such a way that we love God more because of it, we do not yet know as we ought to know.
Alongside “All truth is God’s truth,” we need to say, “All truth exists to display more of God and awaken more love for God.” This means that knowing truth and knowing it as God’s truth is not a virtue until it awakens desire and delight in us for the God of truth. And that desire and delight are not complete until they give rise to words or actions that display the worth of God. That is, we exist to glorify God (1 Corinthians 10:31), and merely knowing a truth to be God’s truth does not glorify him any more than the devil does.
All truth exists to make God known and loved and shown. If it does not have those three effects it is not known rightly and should not be celebrated as a virtue.
~ John Piper