Dion: 'we need to put a price on carbon'

Here's an interesting comment about the current leader of the Liberal Party of Canada - from an editorial in today's Toronto Star:

Many Canadians, including a large number of Liberals, think Liberal Leader Stéphane Dion must be crazy. With oil prices close to $120 (U.S.) a barrel and gasoline approaching $1.30 a litre, Dion has been musing aloud about bringing in a carbon tax that would push those prices, in Canada at least, even higher.

What would cause "many Canadians" to think that Dion "must be crazy"?

It appears to be nothing less than his own words.