What I'm trying to do is, is to make a significant difference in space flight. And help make space flight accessible to almost anyone.

Failure is an option here. If things are not failing, you are not innovating enough.

When something is important enough, you do it even if the odds are not in your favor.

People should pursue what they're passionate about. That will make them happier than pretty much anything else.

I think it is possible for ordinary people to choose to be extraordinary.

I'm extremely confident that solar will be at least a plurality of power, and most likely a majority... in less than 20 years.

Constantly seek criticism. A well thought out critique of what you're doing is as valuable as gold

Optimism, pessimism, f**k that; we're going to make it happen. As God is my bloody witness, I'm hell-bent on making it work.

I think that's the single best piece of advice: constantly think about how you could be doing things better and questioning yourself.

Mars is the only place in the solar system where it's possible for life to become multi-planetarian.

My mentality is that of a samurai. I would rather commit seppuku than fail.

Every time I hear a political speech or I read those of our leaders, I am horrified at having, for years, heard nothing which sounded human. It is always the same words telling the same lies.

Come my, heart, up and away!

Being a good writer doesn’t make you a good reporter, it takes hustle.

Christian brotherhood is not an ideal which we must realize; it is rather a reality created by God in Christ in which we may participate.

Was the crew well? Was I not? I had profited in many ways by the voyage. I had even gained flesh, and actually weighed a pound more than when I sailed from Boston.

Sometimes I have these abstract ideas and then lose track of myself.

The road does not always bring out the best in people.

Concentration is that ability to not think about anything.

He is a fool who is not for love and beauty. I speak unto the young, for I am of them and always shall be.

I would prefer to abandon the terminology of the past. 'Superpower' is something which we used during the cold war time. Why use it now?