"Logic is the technique by which we add conviction to truth"
About this Quote
That distinction carries real bite in a 17th-century French moralist’s world, where salons, sermons, and court politics ran on rhetoric as much as reason. La Bruyere wrote in the shadow of Louis XIV, a regime that perfected the aesthetics of authority; conviction was often manufactured socially, not discovered intellectually. Against that backdrop, he’s hinting that logic is partly a social technology: a disciplined way to convert a true proposition into something that can survive vanity, bias, and the desire to belong.
The subtext is slightly cynical, and deliberately so. If logic “adds” conviction, then conviction is not a reliable signal of truth; it’s an effect, like varnish on wood. You can hear the warning: beware people who confuse feeling sure with being right, and beware yourself when certainty arrives too easily. At the same time, the quote grants logic a practical dignity. It’s not mere pedantry. It’s the method by which truth becomes portable - teachable, arguable, defensible - in public life, where the best idea is worthless if it can’t be carried across the room.
Quote Details
| Topic | Reason & Logic |
|---|---|
| Source | Help us find the source |
| Cite |
Citation Formats
APA Style (7th ed.)
Bruyère, Jean de La. (2026, January 17). Logic is the technique by which we add conviction to truth. FixQuotes. https://fixquotes.com/quotes/logic-is-the-technique-by-which-we-add-conviction-24131/
Chicago Style
Bruyère, Jean de La. "Logic is the technique by which we add conviction to truth." FixQuotes. January 17, 2026. https://fixquotes.com/quotes/logic-is-the-technique-by-which-we-add-conviction-24131/.
MLA Style (9th ed.)
"Logic is the technique by which we add conviction to truth." FixQuotes, 17 Jan. 2026, https://fixquotes.com/quotes/logic-is-the-technique-by-which-we-add-conviction-24131/. Accessed 12 Feb. 2026.










