Its Use Must Cause Its Slipping From Our Hands

Its use must cause its slipping from our hands;
Its measurement has light years joined to blinks.
Too much, you’ll notice, rapidly expands;
And yet: too little mocks us as it shrinks.

With ticks and tocks its passage codified,
This captor holds us hostage ’til we sleep.
Yet where, in conscious stillness, we abide
In moments, what a harvest we can reap!