"You can't make a race horse of a pig."
"No," said Samuel, "but you can make a very fast pig."

A pig is a pig," said the stranger, "and a pig-boy is a pig-boy.

A pig can learn more tricks than a dog, but has too much sense to want to do it.

And hey there little sexy pig, you made it with a man
And now you've got a little kid with hooves instead of hands.

A pig can actually have qualities to get someone out of poverty if properly looked after.

[A] bad-tempered man will never make a good-tempered horse.

Teach him how you will, a pig will never play the flute.

The pig is taught by sermons and epistles
To think the God of Swine has snout and bristles.

Pigs possess a certain native intelligence and common sense by and large missing from our greater poets. When despair lays its clammy paws across their fevered porcine brows, they do not slump about composing sonnets; they take action.

You can put wings on a pig, but that doesn't make it an eagle.

I learned a long time ago never to wrestle with a pig. You get dirty and besides, the pig likes it.

I learned long ago never to wrestle with a pig. ... You get dirty and besides the pig likes it.

And here I cannot help mentioning a very ridiculous show of a learned pig, which of late days attracted much of the public notice, and at the polite end of the town. This pig, which indeed was a large unwieldy hog, being taught to pick up letters written upon pieces of cards, and to arrange them at command, gave great satisfaction to all who saw him, and filled his tormenter's pocket with money. One would not have thought that a hog had been an animal capable of learning: the fact, however, is another proof of what may be accomplished by assiduity; for the showman assured a friend of mine, that he had lost three very promising brutes in the course of training, and that the phenomenon then exhibited had often given him reason to despair of success.

As well hope to start with a string of sausages and reconstruct the pig