55% sureLots of sources credit Julius Caesar with this, and they agree with each other. The book or the speech it first came from hasn't turned up yet.
What turned up
Latin ancestor is genuine Caesar ('est rerum omnium magister usus', De Bello Civili II.8), but this English wording appears in no located translation — the standard McDevitte/Bohn (1859) reads 'experience is the best master in every thing on which the wit of man is employed'
Work
Commentarii de Bello Civili (Commentaries on the Civil War)
Occasion
c. 48 BCE · Roman military campaigns · war memoir/history
Sources checked
en.wikiquote.orgChecked using claude-sonnet-5, 21 August 2026Wikiquote Experience theme page, sourced to Commentarii de Bello Civili
De Bello Civili II.8, McDevitte/Bohn trans. (1859), Wikisource — this rendering reads 'experience is the best master in every thing', NOT our stored wording; Latin 'est rerum omnium magister usus' is genuine Caesar. Stored form unlocated this pass — maybe another translator or a smoothing.
en.wikisource.orgChecked using claude-fable-5, 21 August 2026McDevitte/Bohn 1859 translation of De Bello Civili II.8 — carries the passage, NOT our stored wording
Nothing made from these words yet — Storyfaire is where they get made.
I don't study to know more, but to ignore less.Sor Juana Inés de la Cruz