1. (n.) The system that makes reason alone the ultimate test of truth\; -- opposed to sensualism, or sensationalism, and empiricism.

2. (n.) The doctrine or system of those who deduce their religious opinions from reason or the understanding, as distinct from, or opposed to, revelation.

Buddhology Mariolatry Mariology Mercersburg theology apologetics canonics crisis theology deduction deductive reasoning demonstration dialogical theology discourse discourse of reason discursive reason divinity doctrinalism doctrinism dogmatics eschatology existential theology hagiography hagiology hierology induction inductive reasoning logical thought logos Christology logos theology natural theology neoorthodox theology neoorthodoxy patristic theology phenomenological theology philosophy physicotheology proof ratiocination rationality rationalization rationalizing reason reasonableness reasoning religion scholastic theology secularism sophistry soteriology specious reasoning sweet reason systematics theology