"You are terrifying, and strange, And beautiful;
Something not everyone knows how to love."
Warsan Shire - For women who love too much
"No-one leaves home unless home is the mouth of a shark"
Warsan Shire again but shamefully I forget the name of the piece 
"Pure and clean like the cry of a baby
And the universe slide from my side."
Sylvia Plath, The Birthday Present
"That landscape of imperfections his bowels were part of"
And
"A mongrel, working his legs to a gallop
Hustled a gull flock to flap of the sand spit"
Both from Plath's "Suicide Off Egg Rock"
I see it's been mentioned several times already, but the last line of Seamus Heaney's Mid Term Break is heart-rendingly memorable.
I also love Heaney's Act of Union but can't possibly reduce my selection to only a few words. It needs the whole context as its power lies in the way it uses pregnancy as a metaphor for politics/history.
It’s on my warm palm now, your burnished ring!
I feel your ashes, head, arms, breasts, womb, legs,
sift through its circle slowly, like that thing
you used to let me watch to time the eggs"
Tony Harrison, Timer
Has me in tears every time.