It's good for people to believe in causes larger than themselves.

You're never really out of politics.

Tad Homer-Dixon is a rare kind of public intellectual, who combines real expertise with a commitment to communicate to the widest possible readership. In The Ingenuity Gap he wants us all to wake-up to the fearful possibility that our blithe trust in science and technology may be misplaced. Human ingenuity may not be capable of coping with two emerging crises of this century and the next: population growth and environmental despoliation. Read Homer Dixon's wake-up call and you will see the future very differently.

How do you keep war accountable to the American people when war becomes invisible and virtual?

We can't afford to waste people. We can't afford to have people think the game is over before it's begun. We've got to be saying to the Canadian people: you can't tax cut your way to a productive 21st-century economy. You can talk that talk, but it's not going to give you a productive 21st-century economy, because it will scythe apart the public goods that make prosperity possible. That's what we've got to say, and so we shall.

No kid graduating in a political science class in Canada should not understand what's happened to income inequality since the 1970s, period. And then, what do we do about it? It's the biggest problem out there, in all western liberal societies.

There are all kinds of different forms of public service, but there's no form of public service that can make more difference for more people than partisan political activity.