It may be that there is no such thing as an equable motion, whereby time may be accurately measured. All motions may be accelerated or retarded, but the true, or equable, progress of absolute time is liable to no change.

The butterfly counts not months but moments, and has time enough.

O time, swift robber of all created things, how many kings, how many nations hast thou undone, and how many changes of states and of various events have happened since the wondrous forms of this fish perished here in this cavernous and winding recess. Now destroyed by time thou liest patiently in this confined space with bones stripped and bare; serving as a support and prop for the superimposed mountain.

There's a time for all things.

Employ your time in improving yourself by other men's writings, so that you shall gain easily what others have labored hard for.

Have no fear for atomic energy, 'cause none of them can stop the time.