Watching Salma Hayek, one of my favorites, in the film The Roads Not Taken amused me because I recognized the title as a reference to one of Robert Frost's most famous poems. 

Later, I learned that this line has been used in several articles and novels.

“The Road Not Taken” is a narrative poem that centers on the theme of divergent paths, both literal and figurative. 

It is also related to a story I have read somewhere. 

Edward Thomas and Robert Frost were close friends who took many walks together. One day, as they walked, they came across two roads. Thomas was indecisive about which road to take and, in retrospect, often lamented that they should have taken the other road. 

When Frost shared the poem with him in 1915, Thomas took it seriously, and it influenced his decision to enlist in World War I. 

Read the poem here – 

Two roads diverged in a yellow wood,

And sorry I could not travel both

And be one traveler, 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 step 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 traveled by,

And that has made all the difference.