We are trying to find the author and title of the poem this line is contained in. Thank you.

According to Bartleby, it is an old Arab proverb:

[www.bartleby.com] />

Les

Yahbut, what does it mean?

See also, from the same site:

[www.bartleby.com] />
[tinyurl.com] />
[www.poeticinhalation.com]

Os cães ladram, mas a caravana passa

in Brazil it is used to refer to something no one can stop,
but not in a bad sense

like it is meant to be and that despite opposition, it will happen

The dogs bark but the caravan moves on.
That's the original, i think. It means that insignificant or unimportant people can make all the fuss they like, but it has no effect on what happens

Thank you for your response. Do you know where the phrase comes from or the author?

Did you see the previous posts? I suspect the poem you are seeking is "Grand Galop" by John Ashbery. The original is from an Arab proverb, but like most proverbs, the first to voice the thought is lost. Marcel Proust was also mentioned, but he was apparently just passing it along.