60% sureLots of sources credit Rosa Parks 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
Quoted in Rita Dove, "Rosa Parks: Her simple act of protest galvanized America's civil rights revolution," Time (14 June 1999) — contemporaneous, reputable secondary source.
Sources checked
en.wikiquote.orgChecked using claude-sonnet-5, 21 August 2026Quotes section, quoted in Time (1999)
Nothing made from these words yet — Storyfaire is where they get made.