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.