Ulysses by Tennyson

'Tis not too late to seek a newer world.
Push off, 

and sitting well in order 

smite the sounding furrows; 

for my purpose holds

To sail beyond the sunset, and the baths of all the western stars,

until I die.

It may be that the gulfs will wash us down:

It may be we shall touch the Happy Isles,

And see the great Achilles, whom we knew

Though much is taken, much abides; 

and though we are not now 

that strength which in old days moved earth and heaven; 

that which we are, we are;

One equal temper of heroic hearts,
Made weak by time and fate, but strong in will

To strive, to seek, to find, and not to yield.