Written On the Top of Ben Nevis

Read me a lesson, Muse, and speak it loud
Upon the top of Nevis, blind in mist!
I look into the chasms, and a shroud
Vaporous doth hide them; just so much I wist
Mankind do know of Hell. I look o'erhead,
And there is sullen mist; even so much
Mankind can tell of Heaven. Mist is spread
Before the earth, beneath me - even such,
Even so vague is man's sight of himself.
Here are the craggy stones beneath my feet -
Thus much I know, that, a poor witless elf,
I tread on them, that all my eye doth meet

Is mist and crag, not only on this height,
But in the world of thought and mental might.