• Leonard Peikoff
    Time is a measurement of motion; as such, it is a type of relationship. Time applies only within the universe, when you define a standard — such as the motion of the earth around the sun. If you take that as a unit, you can say: “This person has a certain relationship to that motion; he has existed for three revolutions; he is three years old.” But when you get to the universe as a whole, obviously no standard is applicable. You cannot get outside the universe. The universe is eternal in the literal sense: non-temporal, out of time.