Languages are living things. They morph and change, evolve and grow, and die. Latin lives on in English, French, Italian, Spanish and other languages. So in a sense it is not dead. Reading Beowulf (Old English) would not be much less intelligible to a modern audience than reading the Aeneid in Latin. Time changes all languages... and fugit interea, fugit irreparabile tempus, singula dum capti circumvectamur amore.

Edit: that is, "meanwhile it flees: time flees irretrievably, while we wander around, prisoners of our love of detail."