Reference to El Ingenioso Hidalgo Don Quixote de la Mancha by Miguel de Cervantes. The slogan of the International Society of Windmill Chasers roughly translates as, "We are kings of our own firesides." This is a reference to the quote, "You are a king by your own fireside, as much as any monarch in his throne," from the book. How do you join the International Society of Windmill Chasers? Follow the beat of your own drum, and simply declare yourself to be a member! The inside of the card reads, "You've always marched to the beat of your own drum. Thanks for sharing the music!" It's a great way to let someone who is just a little "different" know how much their oddness is appreciated.