Who climbs till nerve and force are spent,
With many a puff and pant:
Who still, as rises the ascent,
In language grows more violent,
Although in breath more scant:

Who, climbing, gains at length the place
That crowns the upward track.
And, entering with unsteady pace,
Receives a buffet in the face
That lands him on his back:

And feels himself, like one in sleep,
Glide swiftly down again,
A helpless weight, from steep to steep,
Till, with a headlong giddy sweep,
He drops upon the plain -

So I, that had resolved to bring
Conviction to a ghost,
And found it quite a different thing
From any human arguing,
Yet dared not quit my post

But, keeping still the end in view
To which I hoped to come,
I strove to prove the matter true
By putting everything I knew
Into an axiom: