Intense, long, certain, speedy, fruitful, pure—
Such marks in pleasures and in pains endure.
Such pleasures seek if private be thy end:
If it be public, wide let them extend.
Such pains avoid, whichever be thy view:
If pains must come, let them extend to few.

Jeremy Bentham, An Introduction to the Principles of Morals and Legislation, London, 1789, chap. 4, fn. 1