“The clock ticked with empty urgency, as though trying to catch up with the time. In the street a siren howled.”
“Time can tick when there is no clock.”
“The clock always ticks. There are times you don't hear it, and there are times that you do.”
“There is certainly a universal and unconscious propensity to impose a rhythm even when one hears a series of identical sounds at constant intervals... We tend to hear the sound of a digital clock, for example, as "tick-tock, tick-tock" - even though it is actually "tick tick, tick tick.”
“Just like the beating of the heart of a man...so is the ticking of a clock...and just like the ticking of a clock...so is the ticking of a bomb.”
“For the starship's inhabitants, time now stands still.For planet Earth, the clock has begun ticking...”