"is what keeps everything from happening at once."

"Very clever," laughed the Chemist.

The Doctor leaned forward earnestly. "I should say," he began, "that time is the rate at which we live—the speed at which we successively pass through our existence from birth to death. It's very hard to put intelligibly, but I think I know what I mean," he finished somewhat lamely.

"Exactly so. Time is a rate of life-progress, different for every individual and only made standard because we take the time-duration of the earth's revolution around the sun, which is constant, and arbitrarily say: 'That is thirty-one million five hundred thousand odd seconds.'"

"Is time different for every individual?" asked the Banker argumentatively.

"Think a moment," returned the Chemist. "Suppose your brain were to work twice as fast as mine. Suppose your heart beat twice as fast, and all the functions of your body were accelerated in a like manner. What we call a second would certainly seem to you twice as long. Further than that, it actually would be twice as long, so far as you were concerned. Your digestion, instead of taking perhaps four hours, would take two. You would eat twice as often. The desire for sleep would overtake you every twelve hours instead of twenty-four, and you would be satisfied with four hours of unconsciousness instead of eight. In short, you would soon be living a cycle of two days every twenty-four hours. Time then, as we measure it, for you at least would have doubled—you would be progressing through life at twice the rate that I am through mine."

"That may be theoretically true," the Big Business Man put in. "Practically, though, it has never happened to any one."

"Of course not, to such a great degree as the instance I put. No one, except in disease, has ever doubled our average rate of life-progress, and lived it out as a balanced, otherwise normal existence. But there is no question that to some much smaller degree we all of us differ one from the other. The difference, however, is so comparatively slight, that we can each one reconcile it to the standard measurement of time. And so, outwardly, time is the same for all of us. But inwardly, why, we none of us conceive a minute or an hour to be the same! How do you know how long a minute is to me? More than that, time is not constant even in the same individual. How many hours are shorter to you than others? How many days have been almost interminable? No, instead of 

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