Fine. Okay.
Let me give you an illustration of how I think.... If we take Imperial Oil, the largest oil company in Canada, and compare it with Statoil in Norway, we notice that over the last 50 years or so, Imperial Oil has put away $10 billion or $15 billion in its reserve. Statoil has put away $100 billion. In other words, we're talking about two populations of roughly the same size, but one particular corporation has managed to do much better than the other. Now, that was because it was state-controlled.
I don't think I have a clear formula as to who pays more or less. I would think that a wealthy individual should pay considerably. By the same token, a corporation that is using natural resources and contributing a lot to pollution should pay more, say, than a company that's dealing with solar energy.
I would say that I'm not trying to work out any particular tax model according to some income level but rather what the social contribution is and what the social costs are.