I thought that my voyage had come to its end
at the last limit of my power,---that the path before me was closed,
that provisions were exhausted
and the time come to take shelter in a silent obscurity.

But I find that thy will knows no end in me.
And when old words die out on the tongue,
new melodies break forth from the heart;
and where the old tracks are lost,
new country is revealed with its wonders.

Rabindranath Tagore

http://www.poemhunter.com/poem/closed-path/