Longfellow

Tell me not, in mournful numbers, 
  "Life is but an empty dream!"
For the soul is dead that slumbers,
  And things are not what they seem.

Life is real! Life is earnest!
  And the grave is not the goal;
"Dust thou art, to dust returnest."
  Was not spoken of the soul.

Not enjoyment,  and not sorrow
  Is our destined end or way;
But to act that each to-morrow
  Finds us further than to-day.

Longfellow