There are a lot of young Canadians who want to be politically active at their college or their university who can't go to the party convention, who can't take part in politics, because they're holding down a job to pay their tuition. These are kids who want to do public service, who want to get involved politically, but their financial situation is precarious.

Family traditions are more than arguments with the dead, more than collections of family letters you try to decipher. A tradition is also a channel of memory through which fierce and unrequited longings surge, longings that define and shape a whole life.

You're never really out of politics.

The politics of personal destruction, the politics of division, the politics of fear, it's all there. It helps you to define the politics of moderation - the politics of democratic respect, the politics of hope - more clearly.

You can't get back to power by defining your project in negative terms. But it helps to have somebody in office who represents the opposite of what you believe.

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.

I'm very struck by what you can do in a classroom. I've got 200 students. You don't do partisan politics in a classroom, that's not appropriate. But you want to give them a strong sense that these are the issues that matter.