Fear connotes something that interferes with what you're doing.

It's something to see a satellite being launched from another satellite.

If people like Edison had waited to make every - or Ben Franklin or some of those people had waited to solve every problem on Earth before they did their research or before they were curious about doing something new, we'd never have made a lot of the progress we have.

As soon as anyone interferes with what I do I'll be out of here,

An end of something means the beginning of something else, and I don't think that something else is going to be the death of the manned space program.

You can't relive your life.