Never be limited by other people's limited imaginations.

Never limit yourself because of others' limited imagination; never limit others because of your own limited imagination.

As an astronaut, you have a very defined set of tasks to do. Those tasks may require you to work 60, 70 or 80 hours a week.

People always think of technology as something having silicon in it. But a pencil is technology. Any language is technology. Technology is a tool we use to accomplish a particular task and when one talks about appropriate technology in developing countries, appropriate may mean anything from fire to solar electricity.

The arts and sciences are avatars of human creativity.

The thing that I have done throughout my life is to do the best job that I can and to be me.

Never be limited by other people's limited imaginations.