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• Pig, n. An animal (Porcus omnivorus) closely allied to the human race by the splendor and vivacity of its appetite, which, however, is inferior in scope, for it sticks at pig.

• Ambrose Bierce, The Devil’s Dictionary

• Never try to teach a pig to sing. You waste your time and you annoy the pig.

• 1973 Robert A. Heinlein, Time Enough for Love (ISBN 0739419447)

• 1993 Dawn Steel, They Can Kill You But They Can’t Eat You (ISBN 0671738321).

• If wishes were wings, pigs would fly.

• Wheel of Time VI: p. 233.

• In The Land of the Pig, The Butcher Is King

• Meat Loaf: Bat out of Hell III.

• Me pinguem et nitidum bene curata cute vises, …Epicuri de grege porcum.

• Translated: You may see me, fat and shining, with well-cared for hide,—…a hog from Epicurus’ herd.

• Horace, Epistolæ, lib. i. iv. 15, 16.

Unsourced

• Never wrestle with a pig. You’ll both get dirty, but the pig will like it.

• The chicken is involved but the pig is committed.

• There are a lot of women who live with pot-bellied pigs. _Catherine Zeta-Jones

• Studying cows, pigs and chickens can help an actor develop his character. There are a lot of things I learned from animals. One was that they couldn’t hiss or boo me. _James Dean

• Don’t give cherries to pigs or advice to fools_Irish Sayings

• If pigs could vote, the man with the slop bucket would be elected swineherd every time, no matter how much slaughtering he did on the side_Orson Scott

• Young pigs grunt as as old pigs grunted before them_Danish Proverb

• Never trust a pig selling pork sandwiches_Tom Robbins-Another Roadside Attraction

Source: Wikiquote