For the absolute avoidance of doubt, my leadership will be about unity, drawing on all the talents - with women representing half of the shadow cabinet - and working together at every level of the party.

If the leadership can't win a debate, then we should show true leadership and implement the democratic will of our party.

I am just an ordinary person trying to do an ordinary job.

You can't sustain a high level of intense activity with thousands of people forever. It has to be for a specific objective.

The climate-studies people who work with models always tend to overestimate their models. They come to believe models are real and forget they are only models.

Environmental spending creates jobs in engineering, manufacturing, construction, materials, operations and maintenance.

Economic growth is the aggregate effect of the quest to accumulate capital and extract profit. Capitalism collapses without growth, yet perpetual growth on a finite planet leads inexorably to environmental calamity.

Issues of energy, climate change, nuclear arms control and non-proliferation are all big deals. These are problems that we have to get right globally, not just nationally, and there are big benefits in cooperating, in terms of sharing costs, in terms of sharing risks, in terms of propagating the best answers.