They decided to include the quote 'Where we had thought to stand alone, we will be with all the world' on the Man of Steel's suit. Wilkinson, who has been working with Snyder for years on his previous films, says that the 'Batman v Superman' director is a big fan of Campbell, an author who wrote about mythology and religion. 'That's something that's very intricate and something the really eagle-eyed fans will spot.' 'This time around, Zack was interested in incorporating this Joseph Campbell script into the suit, to the biceps, and the belt,' 'Batman v Superman' costume designer Michael Wilkinson tells Tech Insider.