One cannot walk down an avenue, converse with a friend, enter a building, browse
beneath the arches of an old arcade without meeting an instrument of time. Time is visible
in all places. Clock towers, wristwatches, church bells divide years into months, months
into days, days into hours, hours into seconds, each increment of time marching after the
other in perfect succession. And beyond any particular clock, a vast scaffold of time,
stretching across the universe, lays down the law of time equally for all. In this world, a
second is a second. Time paces forward with exquisite regularity, at precisely the same
velocity in every corner of space. Time is an infinite ruler. Time is absolute.
-- Einstein's Dreams
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