Anybody who predicts the death of cities has already met his spouse.

Communications tools don't get socially interesting until they get technologically boring... It's when a technology becomes normal, then ubiquitous, and finally so pervasive as to be invisible, that the really profound changes happen.

Society is not just the product of its individual members; it is also the product of its constituent groups.

It used to be expensive to make things public and cheap to make them private. Now it's expensive to make things private and cheap to make them public.

The historic role of the consumer has been nothing more than a giant maw at the end of the mass media's long conveyer belt, the all-absorbing Yin to the mass media's all-producing Yang....In the age of the internet, no one is a passive consumer anymore because everyone is a media outlet.

We are moving from sharing to cooperation to collective action.

Knowledge, unlike information, is a human characteristic; there can be information no one knows, but there can't be knowledge no one knows.