Sonnet: Get On Here

The Time bids "Get on", Circumstance nods "Here"
So mounted on the fragmentary floe
Whose steady movements beyond his knowledge go
Man daily strives against the mortal fear,
Meantime the journey launches his career
With heartstings of joy and weary woe
Distracting from accelerated flow
Till death pronounced climbs onto his bier,
But pitched from side to side it's not yet done
Made seasick while bound in wood on land
Awareness dawns of Time's impelling thrust
Which sounds infinities of heat and dust
Cascading mountains grind to grainy sand
Minutest manmotes puff below a sun.