Classic Inspiration VII

If you can force your heart and nerve and sinew
To serve your turn long after they are gone
And so hold on when there is nothing in you
Except the Will which says to them: "Hold on!"

. . .

If you can fill the unforgiving minute
With sixty seconds' worth of distance run --
Yours is the Earth and everything that's in it,
And -- which is more -- you'll be a Man, my son!

Rudyard Kipling, If