Neil deGrasse Tyson on failure and experimenting:

…it’s not only admitting or celebrating when you don’t know something, but also recognizing the value of failure. You don’t want to fail doing something that has already been done where people succeeded. You want to be able to fail at something that has never done before and recognize that the day you never fail is the day you are no longer on the frontier of anything. So we should celebrate the experiment.

Jim Lovell on Appollo 13’s legacy:

Not landing on the moon was probably the best thing that ever happened to NASA. …it looked like it was so routine that people were not getting interested any more and not realizing the amount of technology and work that had to be done to make those flights safe…. 

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