We have to get out of the mind-set of saying, "No matter how hard we try, we will have accidents," and into "We will not have accidents."

I have flown ValuJet. ValuJet is a safe airline, as is our entire aviation system.

Its important not to focus so much on the statistics, but [on people's] perceptions.

Many trees planted around a home reduce the need for air conditioning.

We have to get out of the mind-set of saying, "No matter how hard we try, we will have accidents," and into "We will not have accidents."

The critics don't build great cities

I do not underestimate the difficulty of the challenge that global climate change presents to us. It will take a significant effort and the best talent and technology we have to solve the problem.