There is no pure reason, but only reasonable reason. This inability comes from the rigorous tutelage that impedes the individual from seeking courage to find the true reasons to quieten the garrulousness and unreasonable demands. Knowledge and humility is not an entitlement; one cannot use lack of understanding and inefficient communicating skill to reason irrationally. Read something that enlightens your imagination and gives you the freedom to think. Anything that is insipid and self-aggrandizing and does nothing to add some value to your intellect should be rejected. The crisis occurs in knowledge when there are too many of those inputs weakening the very reason of pure reason.