Heraclitus (in)famously claimed that all is flux; that change is the only constant. Excluding the Triune, Infinite Being, there is plausibility to the more limited claim that all finite beings are flux, that change is a constant. The frail, clumsy body of a child grows into the strong, supple one of an adult. Even the soul of man grows out of infancy into maturity, out of frailty into fortitude, graced by wisdom and virtue.
Philosophers from Augustine to Einstein have sought to define time; but, judging from our language, we have settled it in more no-nonsense fashion.We speak of saving time, spending time, wasting time, investing time, losing time, buying time—the metaphor buried beneath such phrases is hard to miss: time is a commodity. Like gold, wheat, and cattle, it comes in limited quantities, has relative worth, and is subject to demand, supply, and chance.