Time moves swiftly onward. Time was said to fly or flee by numerous ancients, especially the Romans, for whom Tempus fugit (translated as “time flies,” although it also means “flees”) was a well-known proverb. Chaucer wrote, “For though we sleep or wake, or rome, or ryde, Ay fleeth the tyme, it nil no man abyde” (The Clerk’s Tale). Occasionally the term was amplified, such as “Time flies as swiftly as an arrow” (in Ken Hoshino’s translation of Kaibaka Ekken’s Ten Kun, 1710). Today we sometimes say, how time flies, occasionally amplified (either seriously or satirically) with when you’re having fun.