Where does the quote about happy pigs and sad philosophers come from?

Socrates is bound to be mentioned in the philosophical take with this one. The Englishman and 19th century advocate of utilitarianism, John Stuart Mill attributes this to Socrates:

"It is better to be a human being dissatisfied than a pig satisfied; better to be Socrates dissatisfied than a fool satisfied. And if the fool, or the pig, are of a different opinion, it is because they only know their own side of the question. The other party to the comparison knows both sides."

http://en.wikiquote.org/wiki/Socrates

Thanks but the passage I'm looking for is along the lines of a quotation 'I' vaguely remember -
"I would rather be a sad philosopher than a happy pig"
I concur with yourself that its origins are of Socrates.
Thanks tundish

I think the saying you remember was derived from the remark that Mill made in reference to Socrates. You can find it online in a variety of forms, but several sites do mention Mill as the source without providing the full quotation that peasy kindly gave you.

Solomon expressed a similar idea when he said a living dog is better than a dead lion. Eccl. 9:4