Look there's no metaphysics on earth like chocolates.

All growth depends upon activity. There is no development physically or intellectually without effort and effort means work.

Spend time reflecting on your emotional and physical existence and how that applies to the voice. You have to apply that wisdom and experience when you sing - it's what comes through.

It has become part of the accepted wisdom to say that the twentieth century was the century of physics and the twenty-first century will be the century of biology.

Our own physical body possesses a wisdom which we who inhabit the body lack. We give it orders which make no sense.

War is the domain of physical exertion and suffering.

What is the use of physicians like myself trying to help parents to bring up children healthy and happy to have them killed in such numbers for a cause that is ignoble?

At the moment I'm doing this space movie so I'm obsessed with physics and space travel. I know three months down the line it's gone. Then I'll be able to superficially say stuff about space.

I myself believe that there will one day be time travel because when we find that something isn't forbidden by the over-arching laws of physics we usually eventually find a technological way of doing it.

Each day as I travel through downtown Tucson I am amazed at how quickly the most ancient of human behaviors have changed. For as long as there have been Homo sapiens - roughly 200 000 years - people have filled their lives principally with two activities: talking directly with other people and doing physical things.