When we change the way we communicate, we change society.

There is no larger collective-action problem than the environment. The three biggest lies of the environmental movement is that every little bit helps, you can do your part, and together we can do it.

It is the people who figure out how to work simply in the present, rather than the people who mastered the complexities of the past, who get to say what happens in the future.

We systematically overestimate the value of access to information and underestimate the value of access to each other.

Behavior is motivation filtered through opportunity.

The real gap is between doing nothing and doing something.

Unlike sharing, where the group is mainly an aggregate of participants, cooperating creates group identity.