Read carefully and think...
On the Vanity of Earthly Greatness
The tusks that clashed in mighty brawls
Of mastodons are billiard balls.
The sword of Charlemagne the Just
Is ferric oxide, known as rust.
The grizzly bear whose potent hug
Was feared by all is now a rug.
Great Caesar's dead and on the shelf,
And I don't feel so well myself!