On the uttermost far-flung ridge of ice and snow
That over pits of sunset fire hangs sheer
My naked spirit poises, then leaps clear
From the cold crystal into the furnace-glow
Of ruby and amber lucencies, and dives
For the brief moment of ten thousand lives
Through fathomless infinities of light,
Then cleansed by lustral flame and frost returns;
And for an instant through my body burns
The immortal fire of cold white ecstasy,
As down the darkening valley of the night
I keep the old track of mortality.