simplicity itself

English

Noun

simplicity itself (uncountable)

  1. (idiomatic) Something very easy to do or understand.
    • (Can we date this quote by Winston Churchill and provide title, author’s full name, and other details?)
      "No fine speeches, please, sir," she cut in, "but do as I advise."
      "I fear I cannot."
      "Why do you say that? The thing is simplicity itself."