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.

-To me, this poem tells of the temporal nature of our existence(s).
The fleeting dominion of King Ozymandias over that now desolate land shows the futility of power.
Where once was a great man, a broken statue is all that remains.
It is assumed that Ozymandias was a cruel leader, given the description of the statue and the accompanying engraved quote.
Cruelty only stretches so far, and in the end only ruin and loss was gained.

Perhaps what Ozymandias feared the most was being forgotten.
I think we all face that fear sometime in our lives.
It's not about being remembered, but how you live your life.
As Oscar Wilde puts it: "To live is the rarest thing in the world. Most people exist, that is all."