Ad utrumque paratus, sometimes shortened to ad utrumque, is Latin for "Ready for either alternative" or "Prepared for both" and is a sentence attributed to Virgil. It is used as a motto on the seal of Lund University. It is also used as the motto of the Spanish Navy Submarine force. The motto is also inscribed at the entrance of the Submarine School building in Cartagena's Naval Station, Murcia, Spain. The beginning (Ad utrumque) was also used as personal motto by the Spanish Monarchs in the 17th Century.