They were had a challenge to write a poem about a passage from Diodorus Siculus (a Greek historian) describing a massive Egyptian statue and quoting its inscription:

"King of Kings Ozymandias am I. If any want to know how great I am and where I lie, let him outdo me in my work."

Anyway, I'll put Shelley's first, since I think it's more subtle.

I met a traveller from an antique land

Who said: "Two vast and trunkless legs of stone

Stand in the desert. Near them, on the sand,

Half sunk, a shattered visage lies, whose frown,

And wrinkled lip, and sneer of cold command,

Tell that its sculptor well those passions read

Which yet survive, stamped on these lifeless things,

The hand that mocked them and the heart that fed:

And on the pedestal these words appear:

'My name is Ozymandias, king of kings:

Look on my works, ye Mighty, and despair!'

Nothing beside remains. Round the decay

Of that colossal wreck, boundless and bare

The lone and level sands stretch far away.