Technological progress is like an axe in the hands of a pathological criminal.

Nobody spends any money on smallpox unless they worry about a bio-terrorist recreating it.

I am confident that nobody... will accuse me of selfishness if I ask to spend time, while I am still in good health, with my family, my friends and also with myself.

All credibility, all good conscience, all evidence of truth come only from the senses.

I think, under President Obama, who was a really bright guy - I didn't agree with a lot of his politics - but we got to the point internationally where our friends didn't trust us. They were confused. And our enemies didn't quite respect us.