I do remain optimistic that one day the world will realise that carbon dioxide is more of a friend than an enemy to the earth's flora and fauna, and I do seriously believe that, given the extraordinary complexity of the natural forces controlling our climate, which have done so for millions of years, the only sensible policy response to the natural process of climate change is prudent and cost-effective adaptation.

If the question is do people (in the Liberal Party) believe that human beings are the main cause of the planet warming, then I'd say a majority don't accept that position.

Making the documentary was an extraordinary experience and it really hit home to me the quasi-religious nature of this anthropogenic global warming cause. These people really have found religion.

It presents a really compelling case against the whole theory of anthropogenic global warming. From my point of view, it is a theory that has completely corrupted public policy making in most of the developed world. It confronts all the dubious claims that the warmists have put out there.

... as we are being blunt, the fact is that Tony [Abbott] and the people who put him in his job do not want to do anything about climate change. They do not believe in human caused global warming. As Tony observed on one occasion "climate change is crap" or if you consider his mentor, Senator Minchin, the world is not warming, its cooling and the climate change issue is part of a vast left wing conspiracy to deindustrialise the world.

It is absolutely outrageous that a spin doctor for Labor's NBN Co is being paid $450,000 per annum by Australian taxpayers to promote a company that generates no revenue, has no customers and provides no services to anybody

I am quite surprised and rather disappointed by the loneliness, isolation and indeed demonisation the sadly misunder­stood CO2 is experiencing. Thus, upon leaving the parliament, I am contemplating the foundation of an organisation called 'The Friends of Carbon Dioxide'. Membership will of course be open to all, including the plants whose very existence depends on CO2. I think this organisation's slogan, 'CO2 is not pollution', self-selects. It has both accuracy and melody to commend it.