Belief in God is rational. Everything has a cause. So unless there is a first cause, then you would have an infinite regress. And then nothing could exist. Therefore there must be a first cause. Therefore God, the first cause, exists. QED.
12.4.23
With the Rambam and Saadia Gaon, Aristotle gained prominence. [Ibn Gavirol was Platonic]. But the problem with Aristotle was that there is no "form" of the fire that gets into the head to make us know what "hot" is. And as Kelley Ross pointed out, DNA became understood as a way for plants to grow into their final form a different from the forms of Aristotle. So some new thinking became needed to understand Torah in the light of more modern questions. The difficulties of a reconciliation between Reason and Faith need a different approach. One might just go back to Plato and Neo-Plato [Plotinus].