"I think there are a number of things that you can do to encourage your kids' dreams but I do believe in speaking by experience of having a lot of help along the way, stumbling in the past. We've all stumbled and we certainly all deserve to get up and walk again."

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People are really excited about robotic exploration. I understand the feeling there because, in fact, robots can do things humans can't. They can survive harsh conditions, they can explore places we would never go, plus you never actually have to bring them back.

— Neil deGrasse Tyson