“Let us go then, you and I, When the evening is spread out against the sky Like a patient etherized upon a table”

I saw the best minds of my generation destroyed by madness, starving hysterical naked, [. . .]

Or is that not a well known poem, because I think it is.

"Do not gentle into that good night"

or

"To begin at the beginning

It is spring, moonless night in the small town, starless and bible-black, the cobbled streets silent and the hunched, courters’-and-rabbits’ wood limping invisible down to the sloeblack, slow, black, crowblack, fishingboat- bobbing sea"