"I believe that the manned space program can engage the public by advancing the space frontier. Every next mission takes you farther out in space than you were before, either technologically or in terms of distance."

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If you care deeply about a cause and you are then engaged on behalf of that cause in an activity that makes you feel very good and very brave and you're really in solidarity with all your friends, and you're enjoying it, you're probably not advancing the cause very much, because you're spending all your time with people you agree with cheering each other on and not engaging.

— Barney Frank