The biggest mistake is being too afraid of making one.

It was getting the results that made science worth doing; the accolades were a thin, secondary pleasure.

Once you've grown up in space, moving on means moving out, not going back to Earth. Nobody wants to be a groundpounder.

When the chemistry is right, all the experiments work.

(Crank theories) always violated the first rule of a scientific model: they were uncheckable.

People fear their hidden selves, afraid that they will burst out.

Any technology that does not appear magical is insufficiently advanced.

In a tough situation, don't avoid acting just because it's easier or comfortable. Don't lapse into a passive state. People who give up, die.

To shine is better than to reflect.

Passion is inversely proportional to the amount of real information available

Science is like literature, a continuing dialog among diverse and conflicting voices, no one ever wholly right or wholly wrong, but a steady conversation forever provisional and personal and living.

Hope is strong faith.

...the human animal is a selfish beast...

The happiest moment of my life was probably when my daughter was born.

Strange medical news from Pakistan: A man had a successful organ transplant with a dog. They gave the man a dog's organ. In a related story today, Keith Richards was seen chasing a mailman.

I drink a glass of wine or two occasionally with dinner. 'You drink alcohol?!' Well, if my state of consciousness is so fragile that a glass of wine would upset it, then it can't be worth very much.

Persistent calling upon the name of the Lord breaks through every stronghold of the devil, for nothing is impossible with God. For Christians in these troubled times there is simply no other way.

But, listen, Eddie Merkyx would have won six Tours if he hadn't been punched.

Love does not make you weak, because it is the source of all strength, but it makes you see the nothingness of the illusory strength on which you depended before you knew it.

We need love - an awesome love grounded in the evolutionary potential for life on Earth - to become the organizing principle for human society.

If you want a dancer's body, dance. Dance aerobics is my favourite cardio. It's very frustrating if people think you have to become a dancer to do it - you don't.