I always enjoyed giving my writing students this poem at the beginning of the semester, to help them learn the true meaning of essay:
There was a man with tongue of wood
Who essayed to sing,
And in truth it was lamentable.
But there was one who heard
The clip-clapper of this tongue of wood
And knew what the man
Wished to sing,
And with that the singer was content.
A man saw a ball of gold in the sky;
Blustering god . . . sooner would I die
I looked here;
God fashioned the ship of the world carefully.
more on the ship of the world