Longfellow on the importance of the present moment

“Art is long, and Time is fleeting,
And our hearts, though stout and brave,
Still, like muffled drums, are beating
Funeral marches to the grave.
In the world’s broad field of battle,
In the bivouac of life,
Be not like dumb, driven cattle!
Be a hero in the strife!
Trust no Future, howe’er pleasant!
Let the dead Past bury its dead!
Act, — act in the living Present!
Heart within, and God o’erhead!”

–Henry Wadsworth Longfellow, “A Psalm of Life,” (1839)