# Rationalism as a method and as an unbelieving conclusion

Commentary on Orthodoxy by G. K. Chesterton.

On [CH09.P003](https://glosses.org/orthodoxy/pg16769-r1/CH09.P003/#char=0,58): "The first answer is simply to say that I am a rationalist."

The provocation depends on two meanings of rationalist: someone who demands reasons, and someone identified with religious unbelief. Chesterton claims the first while refusing the second. A useful near-contemporary witness is J. M. Robertson's *Rationalism* (1912), published four years after *Orthodoxy*. Robertson says the British public commonly understood the word to mean a freethinker rejecting revelation, a personal God and immortality. But he also identifies the common methodological element of earlier rationalisms as private judgment rather than mere inherited authority. He even acknowledges that religious opponents claim superior rationality and use rationalist methods to a point. [Robertson, §§1–2, pp. 4–8](https://www.gutenberg.org/files/31941/31941-h/31941-h.htm).

That distinction makes Chesterton's claim more precise than a simple joke about believing unbelief. He asks for a reason to treat people as fallen and responsible, then announces a further inquiry into whether Christianity is objectively true. The opening sentences therefore do not yet establish that the Fall happened or that free will exists: a belief's making a practice intellectually coherent does not by itself demonstrate the belief. His second, stronger claim is that the reasons offered against the Christian account failed under examination. The paragraph marks the transition from experienced moral usefulness to an assessment of truth. Whether the subsequent evidence succeeds remains a separate question. Robertson supplies a comparison from the opposing tradition, not an identified source or a reply to this paragraph.

## Sources

- [J. M. Robertson, Rationalism (1912)](https://www.gutenberg.org/files/31941/31941-h/31941-h.htm), §1, The Term, pp. 4–6; §2, The Practical Position, pp. 7–8; Project Gutenberg #31941, transcription of Constable 1912 edition
- [G. K. Chesterton, Orthodoxy (first published 1908)](https://www.gutenberg.org/ebooks/16769), Chapter IX, Authority and the Adventurer, paragraph beginning The first answer; inspected Gutenberg #16769 transcription, whose preliminaries include the 1934 reprint

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