An intellectual may be interested in ideas and policies for their own sake, but a politician's interest is exclusively in the question of whether an idea's time has come.

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 was with the U.N. Secretary-General Boutros Boutros-Ghali on the day that Srebrenica fell, which happened to be a huge historical turning point in the Bosnian war.

One of the greatest feelings in life is the conviction that you have lived the life you wanted to live-with the rough and the smooth, the good and the bad-but yours, shaped by your own choices, and not someone else's.

Patriotism is the secret resource of a successful society.

One of the biggest divides in Canada - I said it in 2006, and I said it right through my political career - is urban-rural. Lots of parts of this country feel entirely left behind. And they're mobilized by, you know, the gun control issue.

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.