If you decide to run for the leadership, you have to go through it with the people you love. But you also have to protect them and I am determined to protect my mum.

The clearest evidence that we are living beyond environmental means is the threat of dangerous climate change. The scale of this threat, to human life and to the natural resources and assets on which it depends, for everything from oxygen and clean water to healthy soils and flood defence, means that this simply must be our top priority

Consuming three planets' worth of resources when in fact we have one is the environmental equivalent of childhood obesity - eating until you make yourself sick.

The science is getting worse faster than the politics is getting better.

Economic dynamism can be combined with environmental and social responsibility. High financial returns can go hand in hand with respect for human rights, and the preservation of the planet's natural resources

The wedding ring on my left hand was bought by my grandfather, Samuel Miliband, in Brussels in 1920. I never knew him, as he died when I was one. But his ring was kept by my aunt until it was placed on my finger by my wife Louise 32 years later.

I'm a great believer in the Arsene Wenger school of management - which is, you don't worry about the opposition, you just get your own act together.