The 5th Elephant

I would like a spine
I'm always on my hands and knees
Gravity's the worst
Hereditary disease
I'd like to see the forest
But I can't see beyond these trees
Even though I can not name them all
I'd like to sail the seven seas

I can't find
The missing element
What's important?
What's irrelevant?

I want to have a wild youth
I've got to have something to miss
I would like a sample
Of the Yeti-like global peace
Everybody's seen it
But no-one ever caught the beast
Oh, what a sad collection
Of thoughts this is