Francis Quarles - On Time

Time's an hand's-breadth; 'tis a tale;
'Tis a vessel under sail;
'Tis an eagle in its way,
Darting down upon its prey;
'Tis an arrow in its flight,
Mocking the pursuing sight;
'Tis a short-lived fading flower;
'Tis a rainbow on a shower;
'Tis a momentary ray,
Smiling in a winter's day;
'Tis a torrent's rapid stream;
'Tis a shadow; 'tis a dream;
'Tis the closing watch of night,
Dying at the rising light;
'Tis a bubble; 'tis a sigh;
Be prepared, O! man, to die.

Francis Quarles

http://www.poemhunter.com/poem/on-time-10/