"If you're going to do a thing, you should do it thoroughly. If you're going to be a Christian, you may as well be a Catholic"
About this Quote
Spark is needling Protestant understatement and liberal, pick-and-mix religiosity by pointing to Catholicism as the maximalist choice: dense doctrine, elaborate ritual, centralized authority, a machine built to eliminate private improvisation. That’s the subtext: thoroughness here means surrendering to a system big enough to constrain you. Catholicism becomes shorthand for commitment with consequences, the opposite of a faith you can edit for comfort.
Context matters because Spark isn’t an armchair provocateur. She converted to Catholicism in the 1950s, and her fiction is full of moral trapdoors, religious seriousness, and characters who find that the “nice” option is often the least honest. The wit lies in how the line flatters and mocks at once: it praises rigor while hinting that people who demand “thoroughness” may be drawn to institutions that do their thinking for them. Spark makes conviction look both bracing and faintly dangerous, which is exactly why the aphorism lands.
Quote Details
| Topic | Faith |
|---|---|
| Source | Verified source: Twentieth Century: "My Conversion" (Muriel Spark, 1961)
Evidence: If you're going to do a thing, you should do it thoroughly. If you're going to be a Christian, you may as well be a Catholic. (pp. 58–63). The earliest primary-source lead I could verify is the 1961 piece "My Conversion" in Twentieth Century, volume 170, pages 58–63. Multiple scholarly sources cite this exact publication as the source for Spark's statements about conversion, and one recent scholarly article gives the full bibliographic reference: Muriel Spark, 'My Conversion', Twentieth Century 170 (1961), 58–63, at 61. However, there is an important complication: Penelope Jardine states that 'My Conversion' was not actually written by Spark as an authored essay, but was an interview conducted by a priest who wrote up her replies and supplied the title. So this appears to be the earliest verified publication of the sentiment, but not necessarily a text authored verbatim by Spark herself. I could verify the publication details from scholarly sources, but I could not directly inspect the original 1961 magazine page image in this search session, so the exact quote text remains less certain than the bibliographic source. Other candidates (1) I Am a Catholic in Case of an Accident (Andy Costello, 2024) compilation96.9% ... If you're going to do a thing , you should do it thoroughly . If you're going to be a Christian , you may as well... |
| Cite |
Citation Formats
APA Style (7th ed.)
Spark, Muriel. (2026, March 16). If you're going to do a thing, you should do it thoroughly. If you're going to be a Christian, you may as well be a Catholic. FixQuotes. https://fixquotes.com/quotes/if-youre-going-to-do-a-thing-you-should-do-it-120399/
Chicago Style
Spark, Muriel. "If you're going to do a thing, you should do it thoroughly. If you're going to be a Christian, you may as well be a Catholic." FixQuotes. March 16, 2026. https://fixquotes.com/quotes/if-youre-going-to-do-a-thing-you-should-do-it-120399/.
MLA Style (9th ed.)
"If you're going to do a thing, you should do it thoroughly. If you're going to be a Christian, you may as well be a Catholic." FixQuotes, 16 Mar. 2026, https://fixquotes.com/quotes/if-youre-going-to-do-a-thing-you-should-do-it-120399/. Accessed 28 Mar. 2026.


