For your perusal and pleasure. This is by no means exhaustive (hell, it’s not even a fraction), but hopefully it’s enough to get the pedantic d-bags in your life who wanna claim “grammar” as an excuse to marginalize your identity to shut the hell up. Enjoy.
“According to the number that yee shall prepare, so shall yee doe to euery one, according to THEIR number.” – Numbers 15:12, The King James Bible
“So likewise shall my heauenly Father doe also vnto you, if yee from your hearts forgiue not euery one his brother THEIR trespasses.” – Matthew 18:35, The King James Bible
“And whoso fyndeth hym out of swich blame, THEY wol come up and offre in Goddes name, And I assoille them “ – Chaucer, Canterbury Tales, The Pardoners Tale
“Yf a psalme scape ony persone, or a lesson, or else yt. THEY omyt one verse or twayne.” – Wynkyn de Worde, The Pilgrims Perfection
“And every one to rest THEMSELVES betake” – Shakespeare, The Rape Of Lucrece
“‘tis meet that some more audience than a mother, since nature makes THEM partial, should o’erhear the speech” – Shakespeare, Hamlet
“Little did I think… to make a… complaint against a Person very dear to you,… but dont let THEM be so proud… as to make THEM not care how THEY affront everybody else” – Samuel Richardson, Pamela, or, Virtue Rewarded
“Now, nobody does anything well that THEY cannot help doing.” – John Ruskin, The Crown Of Wild Olive
“a person can’t help THEIR birth” – W.M. Thackeray
“no man goes to battle to be killed. — But THEY do get killed “ – George Bernard Shaw
“Glancing at a lampshade in a store window, I observe it is too hideous for anyone in THEIR senses to buy” – W. H. Auden, Horae Canonicae
“She kept her head and kicked her shoes off, as everybody ought to do who falls into deep water in THEIR clothes.” – C. S. Lewis, Voyage Of The Dawn Treader
If you guys have any other compelling quote suggestions, please leave them in the comments and I will continue to expand this.