My Twisted World (2014), Thoughts at 14
Quotes about grin
A collection of quotes on the topic of grin, likeness, doing, face.
Quotes about grin

“Never trust a species that grins all the time. It’s up to something.”
Source: Pyramids

Source: The Best of Lewis Carroll

Source: The Autobiography of Malcolm X (1965), p. 418

“You’re evil, you know that?” I said.
She grinned and shook her head. “Chaotic Neutral, sugar.”
Source: Ready Player One
Source: Magic Burns
“He bared his teeth in a happy feral grin. My own personal psycho.”
Source: Magic Bleeds
Source: Magic Strikes
Source: Secret Vampire/Daughters of Darkness/Spellbinder
Source: The Coffin Club
Source: Lover Eternal
Source: Magic Breaks

“Anthony looked down at his evil clutches -- hands, he reminded himself, hands -- and grinned anew.”
Source: The Viscount Who Loved Me
“He grinned at her, and she grinned at him, and it seemed to Maria that suddenly the sun came out.”
Variant: The place is also big enough. We could all live there without killing each other." -Rhage
"That depends more on your mouth than any floorplan." -Phury
Source: Dark Lover

“You got a lotta nerve to say you are my friend. When I was down, you just stood there grinning.”
Song lyrics, Highway 61 Revisited (1965), Positively 4th Street

We Wear The Mask, in the 1913 collection of his work, The Complete Poems of Paul Laurence Dunbar.
Context: We wear the mask that grins and lies,
It hides our cheeks and shades our eyes,—
This debt we pay to human guile;
With torn and bleeding hearts we smile,
And mouth with myriad subtleties.
Why should the world be over-wise,
In counting all our tears and sighs?
Nay, let them only see us, while
We wear the mask.
We smile, but, O great Christ, our cries
To thee from tortured souls arise.
We sing, but oh the clay is vile
Beneath our feet, and long the mile;
But let the world dream otherwise,
We wear the mask!
Source: Dark Needs at Night's Edge
Source: Magic Breaks
Source: The Diamond Throne