tempus fugit

Meanings

1. Synonym of time flies.
2. Expressing concern that one's limited time is being consumed by something which may have little intrinsic substance or importance at that moment; often, synonym of life is short.

Etymology

Borrowed from Latin tempus fugit, from the third book of the Georgics by the Roman poet Virgil (70–19 BCE): sed fugit interea fugit irreparabile tempus (“meanwhile, the irreplaceable time escapes”, literally “but it flees meanwhile: irretrievable time flees”).