Niels Bohr Institute sculptor Rikke Raben for the Niels Bohr Institute. On the front is a portrait of Niels Bohr, the atom sign and stars. The illustration on the back is inspired by a quote from Bohr: "What is it that we human beings ultimately depend on? We depend on our words. We are suspended in language. Our task is to communicate experience and ideas to others". On the back of the medal: "Unity of Knowledge" – the title of a lecture given by Bohr at Columbia University in 1954. "Nosce te ipsum" is Latin and means "know thyself". This quote originates from
¿Por qué no te callas? ¿Por qué no te callas? ¿Por qué no te callas? (, English: "Why don't you shut up?") is a phrase that was uttered by King Juan Carlos I of Spain to Venezuelan President Hugo Chávez, at the 2007 Ibero-American Summit in Santiago, Chile, when Chávez was repeatedly interrupting Prime Minister of Spain José Luis Rodríguez Zapatero's speech. The phrase became an overnight sensation, gaining cult status as a mobile-phone ringtone; spawning a domain name; a contest; T-shirt sales; a television program; and YouTube videos. At the meeting on 10 November 2007, Chávez repeatedly interrupted Zapatero to call Zapatero's predecessor, José