There are a lot of great lines from the Pirates of the Caribbean movies, many of which come from Mr. Captain Jack Sparrow himself. In between his ramblings and shenanigans, Jack can have some pretty astute observations about life. One of our favorites comes from Pirates of the Caribbean: The Curse of the Black Pearl, when Jack swashbuckles Will with this piece of truth.
It is true, some of the greatest geniuses and creatives of the world were brilliant, but also probably a bit mad, too. So, if you have an idea that on the surface seems a little crazy, you might be onto something ingenious.