Barack Obama: “In this country, from the moment you have a new idea, you can explore it in the world's best labs and universities.”

When we choose, when we make that decision, I do believe – and there is evidence for this – that the world gets incrementally better, and that is a worthy goal and it’s worth fighting for.

Please join me in supporting Sherrod Brown. He’ll always fight for Ohio.

People need to “rediscover what’s the story we tell about how we’re going to live together, and see each other, and recognise each other, and disagree, and yet, still care for each other”.

It is a decision about how do we face and embrace this finite amount of time we have on the planet.