I wouldn't go quite that far. A belief in a creator can be tempered with rationality. Let's not forget that Newton, for example, devoted more of his writings to Christianity than he did to science and in fact sought natural laws because he believed that God would create a universe that behaved like clockwork. Einstein's intuition that a simple solution existed to the Michaelson-Morely paradox also derived in part from some kind of unempirical preconception about how "God" (his was impersonal) operated the universe.