A goal without a plan is just a wish.

Antoine de Saint-Exupéry (1900-1944) French writer, aviator

(Spurious)

The earliest version of this quote is found as an anonymous proverb in Joan Horbiak, 50 Ways to Lose Ten Pounds (1995). The earliest association with Saint-Exupéry dates to around 2007. It's sometimes further pinned down to The Little Prince (1943); it does not appear there, but that's Saint-Exupéry's best-known book.