Consider it all joy, my brethren, when you encounter various trials, knowing that the testing of your faith produces endurance. And let endurance have its perfect result, so that you may be perfect and complete, lacking in nothing.
From Ulysses, by Alfred Lord Tennyson:
’Tis not too late to seek a newer world.
Push off, sitting well in order to smite
the sounding furrows; for my purpose holds
to sail beyond the sunset, and the baths
of all western stars, until I die.
Though much is taken, much abides; and though
we are not now that strength which in old days
moved heaven and earth, 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.