The Reaper in The Gate of the Sanctuary from The Temple of the Holy Ghost (Collected Works, Vol I) by Aleister Crowley.
“I tired not of the tigress limbs and lips—
Only, my soul was weary of itself,
Being so impotent, who only sips
The dewdrops from the flower-cup of an elf,
Not comprehending the mysterious sea
Of black swift waters that can drink it up,
Not trusting life to its own ecstasy,
Not mixing poison with the loving-cup.
I, maker of mad rhymes, the reaper she!
We lingered by a day upon the lawn.” [via]