Katharine Sun
　　To realize the value of one year,
　　Ask a student who has failed a final exam.
　　To realize the value of one month,
　　Ask a mother who has given birth to a premature baby.
　　To realize the value of one week,
　　Ask an editor of a weekly newspaper.
　　To realize the value of one hour,
　　Ask the lovers who are waiting to meet.
　　To realize the value of one minute,
　　Ask a person who has missed the train, bus or plane.
　　To realize the value of one second,
　　Ask a person who has survived an accident.
　　To realize the value of one millisecond,
　　Ask the person who has won a silver medal in the Olympics.
　　Treasure every moment you have.
　　Yesterday is history.
　　Tomorrow is mystery.
　　Today is a gift.
　　That’s why it’s called “the present”.