Biofuels such as ethanol require enormous amounts of cropland and end up displacing either food crops or natural wilderness, neither of which is good.

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.

What can a man do for a woman while she live her life? You can only show her that you love her.

Forgive, O Lord, my little jokes on Thee, and I'll forgive Thy great big joke on me.

He that gains well and spends well needs no count book.

Our owne actions are our security, not others judgements.

Whoever makes home seem to the young dearer and more happy, is a public benefactor.

And Paul hits this chord, and I turn to him and say, 'That's it! Do that again!' In those days we really used to absolutely write like that - both playing into each other's noses.

For every mountain, there is a miracle.

God is whoever raised Jesus from the dead, having before raised Israel from Egypt.

White-collar crime gets more outrageous by the second in America.

Outside advice can only tell you how a decision looks. Only you can know how it feels. The best decisions look and feel right.