  Whereas medieval and Renaissance authors often seemed to rely on the double-truth theory in order to maintain the freedom of scientific research and teaching, Telesio maintained a purely scientific approach. But he did not deny the existence of God and of the human soul. Telesio's God is not the God who acts in nature and history, though he did not deny the possibility of miracles (DRN book IV, ch. XXV; vol. I, p. 176). The God Telesio seems to imagine can be compared to a mechanic. Just as the best mechanic creates an artefact which will work without interruption and default, so the power of the almighty divine artist is represented in a cosmos which is able to generate and to sustain itself without ever running the danger of corruption (see DRN book I, ch. X).