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Dinosaurs are extinct today because they lacked opposable thumbs and the brainpower to build a space program.

Science has not yet mastered prophecy. We predict too much for the next year and yet far too little for the next 10.

Science cuts two ways, of course; its products can be used for both good and evil. But there’s no turning back from science. The early warnings about technological dangers also come from science.

NASA is not about the ‘Adventure of Human Space Exploration’…We won’t be doing it just to get out there in space – we’ll be doing it because the things we learn out there will be making life better for a lot of people who won’t be able to go.

The dreams of yesterday are the hopes of today and the reality of tomorrow.