Our emotions tell us what to value. They're like a little GPS system: Go that way. Don't go that way.

Donald Trump is this whirling dervish of chaos. He picked a fight with Mexico. Germany is not far behind. He will pick a fight with them. He will pick a fight with China, which would be truly cataclysmic.

Some children lack tools to see their course in the world in far-sighted ways. Just introducing school vouchers won't change that. You have to have nurse-home partnerships, early childhood education, mentoring programs and so on. People learn from people they love.

Live life as a series of revelations

The roots of great innovation are never just in the technology itself. They are always in the wider historical context. They require new ways of seeing. As Einstein put it, 'The significant problems we face cannot be solved at the same level of thinking we were at when we created them.'

Trade has suddenly become massively unpopular. I think that's massively unjust. I think free trade has been wonderful for America on balance.

The technology's going to change, but what people want to read is going to be basically the same.