About time, and changing his clock on October 28, 1962, he wrote: "Time has its own dimensions, and neither the sun nor the clock can encompass them all. All we can do with the astronomical absolutes of time is note them, divide them as we please, and live by them in our daily routines. Beyond that, our own emotions, our hopes and fears, our worry and our relief, shape not only our days but our hours with only casual regard for absolute or arbitrary time. The busy day can be brief, the suspenseful hour endless. Who can prove, by any clock ever devised, that time on occasion does not stand still? The interval between heartbeats can be a terrifying eternity, and the pause between two spoken words can shape the dimensions of all our tomorrows. Time is all around us, the time of the hills, the time of the tides, the lifetime of a man or a tree or an insect. We participate in time, try to shape it to our own necessities; but when we change the clocks we aren't changing time at all. We are playing with figures on a dial that denotes but cannot alter the flow of forever."