Tertullian on the Authority of Scripture versus Philosophical Methods of Inquiry

After Jesus Christ we have no need of speculation, after the gospel no need of research. When we come to believe, we have no desire to believe anything else; for we begin by believing that there is nothing else which we have to believe…My first principle is this. Christ laid down one definite system of truth which the world must believe without qualification, and which we must seek precisely in order to believe it when we find it…What you must seek is what Christ has taught, and precisely as long as you are not finding, precisely until then, you must go on seeking until you do find it.

Tertullian, Prescription against Heretics