In Friday's Republican debate, Herman Cain quoted a poet who said "Life can be a challenge, life can seem impossible, but it's never easy when there's so much on the line". Turns out, that quote comes from "The Power of One", a song from Pokémon: The Movie 2000.
And this wasn't the first time he used this quote. He has used it at least three times before.
So who will he quote next? Here are a few of our guesses. Feeling inspirational yourself? Then add your own predictions!