Doubt and Freedom of Choice

As has been previously discussed, in the earlier Rules, Belief and Disbelief are modes of Will, which is independent of Thinking.  So, prior to the subsumption of the former under the latter, the Cognitive problem of Doubt vs. Certainty is a Volitional one of Freedom of Choice vs. Necessity.  Accordingly, the quest for Certainty is a quest for Necessity, with the result that Freedom of Choice is Necessary, anticipating Existentialism, especially Sartre, by several centuries.  Likewise, in hindsight, Descartes' subsequent reliance on the archaic, eventually repudiated, Proofs of the Existence of God, seems a crutch for his consequent innovations in Mathematics, though, more charitably, in the historical context, his Theology can be interpreted as functioning as parental assistance in a baby learning to walk.