From lots of people:

When you see this, post a poem in your journal.

Two roads diverged in a yellow wood
and sorry I could not travel both
And be one traveller, long I stood
and looked down one as far as I could
to where it bent in the undergrowth;

Then took the other, as just as fair,
and having perhaps the better claim
because it was grassy and wanted wear;
though as for that, the passing there
had worn them really about the same,

And both that morning equally lay
in leaves no feet had trodden black.
Oh, I kept the first for another day!
Yet knowing how way leads on to way,
I doubted if I should ever come back.

I shall be telling this with a sigh
Somewhere ages and ages hence:
Two roads diverged in a wood, and I–
I took the one less travelled by,
and that has made all the difference.