I am surprised that in various countries, whether it's the U.K. or the U.S., you see isolationist tendencies that would tend to work against the co-operation, whether it's climate change, immigration, innovation, helping the very poorest. Those are things where you want to think across country boundaries and see a win-win-type solution.

You always overestimate what you can get done in a year and underestimate what you can get done in 10 years.

The typical project design time for a large company like IBM - and they keep track of this - is a little over four years.

We're responsible for the creation of the PC industry. The whole idea of compatible machines and lots of software - that's something we brought to computing. And so it's a responsibility for us to make sure that things like security don't get in the way of that dream.

If you're smart, you often want a feedback loop so you know if what you've done is... is right.

I'm not somebody who goes to church on a regular basis. The specific elements of Christianity are not something I'm a huge believer in.

There are ecosystems like coral reefs [at risk] through ocean acidification. Those are valuable things that we should protect.