We believe unbelievable progress can be made, in both inventing new vaccines and making sure they get out to all the children who need them.

The obvious mathematical breakthrough would be development of an easy way to factor large prime numbers.

Change the boundaries of business.

The United States has a huge budget deficit so taxes are going to have to go up and I certainly agree they should go up more on the rich than everyone else. That - that's just justice.

Why do people benefit in inverse proportion to their need? Well, market incentives make that happen.

Harnessing steam power required many innovations, as William Rosen chronicles in the book 'The Most Powerful Idea in the World.'

Success is a lousy teacher.