I love this quote by Michael Hardt and Antonio Negri, from Multitude: War and Democracy in the Age of Empire.
Here’s the quote in fuller context:
It has never been true, of course, that the poor and the unemployed do nothing. The strategies of survival themselves often require extraordinary resourcefulness and creativity. Today, however, to the extent that social production is increasingly defined by immaterial labor such as cooperation or the construction of social relationships and networks of communication, the activity of all in society including the poor becomes more and more directly productive. (131)